electrical - chennaimetrorail.org · chennai metro rail ltd, chennai pre tender queries and reply...

Chennai Metro Rail Ltd, Chennai Pre Tender Queries and reply dt 31st March 2016.

S.NOTENDERER'S QUERY CMRL / CRN REPLY

ELECTRICAL

1 TTA

Query: If we will go with OEM Vendor which they already have type test

report once again FAT is required or not.

The LT Panels shall be supplied from Licensed partner’s works. Valid certificate issued

by OEM shall be submitted along with quotation, Licensee Panels assembled by the

Licensee Partner should have conducted S/C test (Icw & Icc for 3Phase & 1 Phase),

Temperature Rise Test & IP Test conducted in any of NABL accredited Labs

(CPRI/ERDA) as per IEC61439-1&2.

However all routine test shall be witnessed by Client & Consultant during FAT as per the

standard guid lines and specification.

2 CONTROL TRANSFORMER

Query: Please confirm control tranformer requirement.

If we have not mentioned / shown anywhere, it is not required to use and the same time

all control wiring shall be 230V.

3 Microprocessor Control Unit For ACB

Query: Since there is discripency between specification, SLD, BOQ

regarding ACB releases, please confirm the ACB release to be

considered. Also confirm the requirement of Communucation moduel,

ZSI, measuring module for all panels.

Please consider the below requirements as mentioned in BOQ.

1. The incoming breaker & buscoupler breakers of MPCC panel should be provided with

Energry based release & LSIG protection.

2. The current based release with LSIG protection should be considered for outgoing

breakers of MPCC panel and incoming breakers of all other LT panels.

3. All LT sub panels (Except MPCC panel) outgoing breakers should have over current

and adjustable short circuit release.

4. The buscoupler and incoming breakers of MPCC panel should have RS 485

communication modules for monitoring & control throuh BMS.

5. All other ACBs / MCCBs in all panel should have dedicated potentail free contactor for

monitoring the status through BMS.

6. Vendor/Switchgear Manufacturer shall submit total discrimination study for consultant

/ client approval.

7. Measuring module to be provided in incoming feeder and buscoupler feeder breakers

of MPCC panel as follows,

• Current –Phase and Neutral

• Voltage – Phase to Phase and Phase to Neutral

• Power- KW,KVAR,KVA

• Energy- KWH

• Power Factor

• Frequency

• Maintenance: number of operations, percentage of contact wear

8. All meters and breaker status shall be wired and connected in common chamber for

IBMS integration

4 SPD

Query: kindly clarify whether we need to follow SLD or BOQ.

Surge arrestor should be provided in incoming feeder of all panels as mentioned in

BOQ.

5 MOULDED CASE CIRCUIT BREAKERS

Query:As per manufacturing Standard MCCB Shall be 8000Cycles

electrical life.

8000 cycles electrical life is acceptable.

6 OUTGOING MCCB FEEDERS

Query: MCCB shall be provided with 3changeover contacts.

All MCCB feeders should be provided with pre potential contactors for monitoring

ON/OFF, TRIP status through BMS.(in addition to indication lamps)

7 ACB Release for Fire fighting Panel Feeder

Query: ACB's will be with Microprocessor based release.

The fire fighting panel feeder should be provided with motor duty ACB breaker which is

suitable for motor applications.

MPCC Panel

8 Buscoupler Feeder

Query: Please clarify the same.

The buscouler feeder should have Ammeter, volt meter and indication lamps as shown

in drawing. However 2O/C+1E/F relay need not be considered for buscoupler feeder.

9 OUTGOINGS

As per BOQ

1250A 4P EDO ACB, 50kA – 4Nos

As per drawing


Query: Please confirm Quantity

Pre tender Queries by the Tenderes and reply by CMRL / CRN

CMRL - Construction of Metro Headquarters Building and other Metro Rail Amenities at Anna Salai, Nandanam, Tender" - Reg.

Kindly proceed as per BOQ. (ie.)



1


10 As per BOQ


As per drawing


Query: Please confirm Quantity

11 As per BOQ


As per drawing


Query: Please confirm.

12 PLC

Query: Please confirm requirement of PLC.

PLC should be provided for interlocking arrangements as mentioned in BOQ and

technical specification.

PLC makes : Omran, Alstom, Inilevo, Siemens

13 DG Incomer

Query: Please confirm the PT & meter requirement.

For metring requirement please consider as follows,

EB INCOMER should have demand controller which is able to trip the circuit breaker

when its reached pre determined value. PT is not required if we have not shown in SLD.

DG INCOMER should have multifunction meter. PT is not required if we have not shown

in SLD.

14 Solar power Incomer

Query: Please confirm the PT & meter requirement.

Please consider MFM with RS485 (silmilar to Countis E53) and PT is not required if we

have not shown in SLD.

15 APFC Panel

Query: Please clarify the same.

Please consider 350KVAR -2Nos as per BOQ.

16 Utility Panel

Query:Please clarify the breaking capacity to be considered.

Please consider 36kA breaking capacity for all breakers and busbars as per BOQ.

17 In BOQ, Providing Combined Digital type Mulitifunction Meter (in both

incoming & outgoing feeder), Surge protection device, ON,OFF,TRIP,

phase indication lamps with control MCB/MPCB/ELCB/RCBOs, and

necessary CTs, PTs etc.all MCCBs should have one (spare) potential

free contactor, Combined digital type Multi function meter with RS485

port. with Modebus TCP provisions, as per the specification and

drawings.

Query: Please confirm requirement of on off trip indication for

outgoings.

ON/OFF/TRIP" indication lamps should be provided in incoming and outgoing feeders of

all panels.

18 DG Synchronising Panel

Query: Please clarify the breaking capacity to be considered.

Please consider 50kA breaking capacity as per BOQ.

FPS

I A.PUMP ROOM

1 Diesel Pump

Query: Kindly confirm whether it is Heat exchanger cooled or Radiator

Cooled Pump ?

Please Consider heat exchanger cooled as per BOQ

2 Main Electrical Driven Pump

Query: Kindly Confirm Shall we quote With Mechanical Seal

Please Consider mechanical seal

3 Strainer

Query: Please confirm what type of strainers to be used.

Please Consider Pot type strainer at pump suction .

II B.HYDRANT SYSTEM

1 Sluice Gate valve

Query: Kindly confirm wheather we have to follow BOQ or Specification

( Non Rising Spindle gate valves as per the specification)

Please Consider as per technical specification

2 & 3 GI Pipes

Query:Please confirm the Thickness of GI Pipes

Pipe thickness shall be followed as per technical specification.

4 Hose Tray

Query: Kindly confirm wheather we have to follow BOQ or Specification

Please Consider as per BOQ and size shall be designed in such a way to keep the

hoses (2 nos of 15mts),nozzles,Axe and branch pipes

5 Excavation of Underground Piping

Query: Please specify the sand bedding layer thickness and kindly

confirm shall we consider Quary dust for sand bedding.

Please Consider as per specification

III C.SPRINKLER SYSTEM

1 Excavation of Underground Piping

Query: Please specify the sand bedding layer thickness and kindly

confirm shall we consider Quary dust for sand bedding.

Please consider the sand bedding as 200mm below and above pipes

Kindly proceed as per BOQ. (ie.)



2


2 Cables

Query: Kindly confirm us we can consider FRLS type PVC insulated

cables.

Acceptable

3 Alarm Valve

Query: Please specify the Size of Alarm valve

Please Consider 150mm dia as per tender drawings

4 Annunciation Panel

Query: Kindly provide detailed specification for Annunciation panel

Please check the technical specification

IV E.TRANSFORMER SPRINKLER SYSTEM

1 Quartzoid Bulb detector

Query: Please confirm shall we consider standard response sprinklersPlease consider quick response sprinkler

V I.FIRE ALARM SYSTEM

1 LPG Gas detection system

Query: i. Please confirm Whether we have to quote for LPG Gas

detectors (Which can be monitored by Fire alarm control panel ) or LPG

gas detection system along with Separate panel and Cabling.

ii.If we have to quote for LPG Gas detection system Please provide the

Canteen area drawing to enable us to quote.

Please quote for the LPG gas detectors which are compatible with/monitored by Fire

Alarm control panel through monitor model

2 Fire Survival Cable

Query: 1.Please confirm the type of cable whether we have to Fire

survival cable or FRLS PVC insulated Cu cables

2.If it is Fire Survival cable Please provide detailed specification

It is only FRLS ZH type of cable to be followed

3 MS conduits

Query: kindly confirm whether we have to quote for medium or heavy

duty conduits.

Please quote for Heavy duty conduits

4 Hydrogen Gas Monitor Detector Control Panel

Query:Please provide detailed specifications & Also confirm the same

which is repeated in the following line item S.No 17.

The item # 16 & 17 stands cancelled / void as per design requirement.

VI II.PUBLIC ADDRESS SYSTEM

1 2C Twin twisted Fire Survival Cable

Query: Please provide the detailed specification for cables since

technical specification doesn’t covers full specification for cables

To follow as per BOQ and it shall be FRLS ZH type of Cable.

VII III.ACCESS CONTROL SYSTEM

1 Network Cables

Query: Kindly provide the Sq.mm. of the cable.

The minimum cross section of the cables to be maintained as 1.5 Sqmm.

2 PVC Conduits

Query: Kindly confirm whether we can consider medium duty or heavy

duty conduits.

Please quote for Heavy duty conduits

VIII V.NOVEC GAS BASED FIRE SUPRESSION SYSTEM

1 Seamless Piping

Query: Kindly provide the Pipe Qty.

The routing and location of nozzle will be drived from software generated system.

Hence, it is vendor respobility to derive the quantity and quote accordingly.

2 Conventional Detector

Query: Kindly confirm the type of detector whether it is Smoke /Heat

detector

It shall be of spot type Photo-electric smoke detector with cross zoning methodology

3 Cables

Query: Please provide the Quantity of Detection Cables since it is not

mentioned in the BOQ

The Cable qty for the Conventional Detectors for NOVEC system to be derived from the

dwgs where individual conventional panels located at the respective protected area w.r.t.

their system design along with BOQ items # 11, 12, 13 & 14.

3


4 Room Dimensions

Query: Please provide the Dimensions ( i.Room Void ii. Ceiling Void , iii.

Floor Void ) for the following areas

1.2nd floor - OCC Theatre

2.AFC CC & CCHS Room ,Pac Room

3.IT Equipment

4.AFC Analyst Room

5.AFC SR Room, PAC Room or AFC SR Room

6. UPS for S&T / UPS for AFC

7.Testing & Commissioning OCC Control room

8.ATS

9.AFC Equipment room ,PAC Room for AFC Equipment room & Comm

Equipment room

10.Comm Equipment Room-1 ,PAC Room for Comm Equipment room

11.SAR & ISCR

12.Comm Equipment room -2

13.AFC AR Room

14.Comm Switch room / Fire control room

15.Network Management room

16.AFC Card Initialization room

17.HUB Room

Refer provided Annexure tab

IX VI.ASPIRATION SMOKE DETECTION SYSTEM

1 Aspiration Tubes

Query: Please specify the qty of Aspiration tubes

To be derived as per the vendors design based on their system design.

2 Cables

Query: Kindly confirm whether we can consider FRLS PVC insulated

cables.

It is only FRLS ZH type of cable to be followed.

3 Please share the drawings (or dimension) of rooms to be covered

along with false ceiling and false floor details we can propose suitable

models to cover the rooms.Refer provided Annexure tab

X VII. ULTRASONIC PEST REPLLER SYSTEM-DIGITAL SYSTEM

1 MS conduits

Query: Kindly confirm whether we have to quote for cables including

FRLS MS conduits.

Yes. The cost shall include FRLS ZH Cables + MS Conduits

XI IX. BUILDING MANAGEMENT SYSTEM

1 Monitoring System

Query: Kindly confirm us which one among those shall be considered.

We have clearly mentioned in BOQ as i3 (or) latest. Hence , the superior one to be

considered at the time of supply of PC/Server

2 Type of Ram

Query: kindly confirm us whether we can consider as per the Technical

specifications.

DDr2 / DDr3 to be considered

3 Printer


1 No of Laser Monochrome Printer @ 12ppm + 1 No of Colour Inkjet Printer @ 12ppm +

1 No of Colour Printer capable of printing visitor data along with photo ID @ 32ppm to

be provided. This specifiction is the minimum requirement, Vendor can supply the latest

model available in the market during the supply of equipments

4 Software Compatibility

Query: Kindly confirm as wether we can consider as per the technical

specifications.

Yes, the proposed software to be compatible with / to UNIX / LINUX.

5 PLC Controllers

Query: Kindly confirm us which one among those shall be considered.To be considered as per BOQ 32/64 bit Microprocessor based controllers

6 SECTION IX: S.No 12 : it is given that the historic data base shall be

minimum 1 mb.


To be considered as 1Mb minimum

4


7 ADDRESSABLE TYPE WATER LEAK DETECTION SYSTEM

Query: Kindly confirm WLD Panel requirement

The WLD Panel shall be of 80 / 160 characters alphanumeric LCD display. Soft touch

membrane keypad. Programmable site name and location. LED indications. Dedicated

outputs for all zones, hooter and fire. Programmable sensitivity adjustment. Date and

Time display. 100+ events recording facility. Password protection for events log.

Integration with BMS via MODBUS / BACNET protocol with selectable baud rate.

These will be mounted on floors with provision to adjust the sensing of thin film of water.

Each Cable is wired to the control panel. In the control panel, the water leak from each

cable is monitored and in case of detection from any cable, an alarm is initiated. This

alarm will be on as long as the water leak present across the cable.It has also a Test

Button in its front panel for testing the water leak conditions. Reset button in the front

panel, resets the alarm provided water leak is removed across the cable and also if Test

button is pressed.

The control system also provides potential free relay contacts for each Zone & future

purpose

8 BUILDING MANAGEMENT SYSTEM:

Query: Kindly confirm estimated cost is included item No 12 to 13 or

not.

Qty for 12 & 13 are same. Cost of item # 13 to be included in item # 12 itself.

XII X.AUTOMATIC FIRE DETECTION AND SUPPRESSION SYSTEM

FOR HT PANEL, MPCCs1 Linear Heat detection Tubes

Query: Kindly confirm whether we can consider the quantity in meters

Yes. The qty shall be 200m (Approx). However, it is vendor respobility to derive the

quantity and quote accordingly.

XIII X. MISCELLANEOUS SYSTEMS

1 Cable Tray

Query: i.Kinldy Confirm whether the cable tray is ladder or perforated

type. ii.Hot dip galvanised or pre galvanised iii.And also

specify the height & Thickness of the cable tray.

i. Perforated type

ii. Hot dip Galvanised

iii. Height - 50 to 75mm and Thickness - 1.8 to 2mm.

XIV CIVIL WORKS

1 Please confirm the scope of Civil works is the scope of Contractor or

Not, If it is in our Scope Please provide Separate Qty of Civil works as

follows ,

i. Excavation & Backfilling

ii. Type of Soil

iii. Pedestal Qty

Respective items will be measured under the main Civil works

XV Kindly provide the Approved List of makes for the following

requirements1 Fire Extinguishers

Query: Kindly confirm shall we consider Safex make Fire Extinguishers

which is given in Page no 954 S.No 178 (Approved list of makes for

electrical Works) But not listed in the Fire protection system list of

makes Page no :956 S.No 221

Please consider : Minimax / ceasefire / tyco

2 LPG Gas Detectors Refer # 249 as per LIST OF APPROVED MAKE / MANUFACTURER OF MATERIALS in

IBMS system.

3 Access Control System Refer # 263 as per LIST OF APPROVED MAKE / MANUFACTURER OF MATERIALS in

IBMS system.

4 Stainless steel Tripod Turnstile with electric operated horms (BOQ

S.No : 15)Magnetic Controls / KABA / Gunnoba

5 Swing gate for Handicap line (BOQ S.No : 16) Shall be of Magnetic Controls / KABA /Gunnoba

6 3Mtr. Rising Boom Barrier with LED strip Indicator (BOQ S.No : 17) Shall be of Magnetic Controls / FAAC / Gandhi auto mation

7 Walk -through detector system (BOQ S.No : 21) Shall be of L3 Communications / Detection System / Approved Equivalent

8 Video Baggage scanner system(BOQ S.No : 22) Shall be of L3 Communications / Detection System / Approved Equivalent

Queries on Covering Letter

1 As per tender document, Soil Investigation Report has to be available

under APPENDIX 9 (Page. 93) in Cover - A - Technical Bid, Part B –

Notice Inviting Tender and General Conditions of Contract. But it is

missing. Kindly provide the same.

Attached along with the Pre Bid Queries and answers.

2 We request you to allow us to use M-Sand in Masonry works also. M Sand / crushed Sand can be considered in RCC works as long as it complies with all

Codal requirements. Also Method statement should be submitted to CMRL for what kind

of Masonary/ RCC works, M sand is proposed to be used. Only after approval of Method

statement, M sand usgae will be permitted by CMRL

3 Kindly provide the Technical Specifications and approved make for Fire

Fighting works.

Please refer page no 635 to 669 of Technical Specifications for Fire Protection works

and Page No 955 to 956 for Approved make for Fire protection works

4 Please provide the list of Approved vendors for UPVC doors, Windows

etc.

No UPVC doors mentioned in the BOQ. Please follow the following approved makes for

UPVC windows: Fenesta / Komerlink / Vega

5 In the BOQ under Schedule IV- Interior works, S. No.1 – Reception

Table item, kindly provide the drawings as it is mentioned to be as per

drawings provided.

Drawings for Reception table is attached with the Pre Bid Queries and Answers

6 In the BOQ under Schedule IV- Interior works, S. No. 9- Storage Unit

item, S. No. 10- Counter with Storage Cabinet & Sink item and S. No.

11- Wash basin bottom covered with louvered shutter item, kindly

provide the drawings.

Drawings for Storage Unit, Counter with Storage Cabinet & Sink and Wash basin

bottom covered with louvered shutter are attached with the Pre Bid Queries and

Answers

5


7 In the BOQ under Schedule IV- Interior works, S. No.42 – MS powder

coated Letter Box item, S. No.44 – Glass Block Partition item and S.

No.45 – Pigeon Hole Rack item, S. No.46 – Display Unit item, No.47 –

Book shelf storage unit item, kindly provide the drawings as it is

mentioned to be as per drawings provided.

Drawings for Glass Block Partition, Pigeon Hole Rack, Display Unit and Book shelf

storage unit are attached with the Pre Bid Queries and Answers. MS powder coated

Letter Box item is bought out item hence please quote as available in the market.

8 In the BOQ under Schedule IV- Interior works, S. No.62 – Polished

Concrete Floor Work (ULTRAFLOOR system), Quantity has not been

given. Kindly clarify the same.

Please consider this item as " Quote rate only"

9 In the BOQ under Schedule IV- Interior works, S. No.78.a – Screen

Printed Ceramic Tile, Basic rate has not been given. Kindly provide the

Basic rate for this item.

Please consider Basic Rate as Rs. 80/ Sq.Ft

10 Kindly clarify whether Service Tax is applicable or not for this project. Service Tax will be Payable seperately subject to submission of Documentary evidence

for the payment made to the Concerned Authority, Govt of India.

B.

1 Earnest Money Deposit

Query:Kindly Confirm EMD shall be paid in the Form of BG

Part (A) Qualification Criteria, Page No. 4, Table – 2.C,

It has been mentioned EMD should be in the form of DD

Part (B) Notice Inviting Tender & General Conditions of Contract, Pg 8

Table 1, Point 6 & Pg 9 - Memorandum, Point C

It has been mentioned EMD shall be either in the form of DD or BG

EMD in the form either DD or BG is acceptable

2 List of Approved Makes / Manufacturer of Suppliers

Query: Part (1B) Technical Specifications - Concrete & All Works, Point

70

- Request to add Chettinad cement in the approved makes,

Chettinad Cement Brand is in the approved makes of the following

companies,

1. Delhi Metro Rail, 2. Cochin Metro Rail, 3. Chennai Mono Rail, 4.

Indian Space Research Organisation, 5. TICEL Bio Park (TIDCO)

Please read as approved make of Cement as " Ultratech, Ramco, Coromandel, ACC,

Zuari. Chettinad"

3 List of Approved Makes / Manufacturer of Suppliers

Query: Part (1B) Technical Specifications - Concrete & All Works, Point

71

Chettinad Builders Private Limited has its own Batching Plant facility

available @ 4 Location's in chennai, We request your goodself to

approve to use this RMC.

Place for erecting the Batching Plant will be identified at site and the contractor to get

the necessary Permission from Authority Concerned for operating the same.

No RMC mix is permitted as the concreteing can be done only in night hours due ot

restriction of heavy vehicle during the day hours by the Traffic dept.

4 Batching Plant

Query: Batching Plant Shall be installed at the Project Site, will separate

land will be allocated especially for Batching plant, storage and

associated works (Operated by the Contractor) to run day time

concreting to catchup schedule.

Place for erecting the Batching Plant will be identified at site and the contractor to get

the necessary Permission from Authority Concerned for operating the same.

5 External Facade and Associated Works

Query: Drawings received are only – Two Elevations, 2nd Floor Plan

and Cross Section AA. We need more drawings of Plans and Cross

sections, particularly for Vertical Cross section through ACP and

Structural Glazing.

Refer the Elevation 1 & 2 showing the location of vision glass, spandrel glass etc under

the drg no. CMRL - HQ - ADM - AR 02 - 01 - 50 - 164413 - T1. Refer the attached

typical design intent details (2 sheets - CMRL-HQ-ADM-AR16-04-11-193866 & CMRL-

HQ-ADM-AR16-04-11-193867), showing the interfacing details through glass / ACP /

Granite etc,.

6 External Facade & Associated Works

Query: Technical Specification shows Semi Unitized whereas BOQ

states Unitized System.

Please consider Unitized Glazing system as per BOQ & typical details attached. Also,

please refer the attached technical specification, which supersedes the earlier Technical

specification attached with the Tender.


Query: Please confirm if this will consist of 4mm thick ACP only and no

glass is required

As per BOQ item no. 1.02, ACP 4.0mm thick as per specification shall only be used for

spandrel. Refer Elevation drawing for location.


Query: Glass - Can equivalent glass from Saint Gobain be used.

Please refer the attached Updated Annexure - I for Glass details to quote the rate under

respective BOQ item.


Query: BOQ - Item No. 3.0 - BOQ states excluding cost of Door which

will be measured separately in the respective items. But there is no

frameless glass door.

As per Tender specification, please consider provision for framed door as per BOQ Item

no. 5.0. In the drawing no. CMRL - HQ - OFF - AR - GR 02 - 194491 - T1 & CMRL - HQ -

OFF - AR - GR 02 - 194491 - T1 (Drawing Legend - MD1 & MD2) shown as frameless

door shall also be considered as framed door as specified in the tender.


Query: Quantity indicated is 21.0 sqmts but description states 4.3 x

3.0mts – 8 nos = 103.2 sqmts. Which is correct?

Please consider sliding door size - 4.30 x 3.0 Mt - 4.Nos for tender purpose and quantity

shall be 51.60Sqm. Please ignore the drawing of frameless door for Entrance.


Query: There are no drawings or specification for item of Doors with

aluminium frame. The drawing received are for Frameless Glass Door.

Refer reply under point no. 9 above, which is applicable for this point also.


Query: It is assumed that ACP Cladding shall be fixed on the wall.

50x25x2mm thick Box section (mill finish) shall be used vertically and

horizontally as support framework. Is off site testing required?

No, please follow as specified in the Attached Technical specification and Particular

specification & BOQ.

Queries on COC and BOQ

6



Query: Detailed drawings are required for these items to understand the

requirement.

a) Is Pergola to be fully covered or cladding only around the RCC ribs

b) Canopy – Drawings showing location and sections details are

required.

Please refer Terrace floor plan for the location of ACP Pergola / canopy.

Fully covered. Refer the typical design intent drawing attached now for Pergola /

Canopy.

14 General Please read the quantity under item no. 14 of façade BOQ as 50 MT instead of 5 MT

and quote the rate accordingly.

15 Electrical Works

Query: In BOQ, SECTION-E -S.No. 71 -It has been Mentioned as Each

32A DP RCBO outgoing consist of 6nos.6/10/16/20A 10KA SP MCB (D-

Curve) in a separate compartment with necessary phase segregation as

required by the Electrical Inspectorate.

Kindly confirm, the DB is 4 Way 7 Seg or 6 Way 7 Seg. (As per Boq

outgoing is 6no's of SP MCB for each phase.

Please consider 4nos of SP MCB for each phase as outgoings instead of 6 nos shown in

the tender considering the 4 W DB

16 Electrical Works

Query: In BOQ, SECTION-E -S.No. 72 - It has been Mentioned as

Each 25A DP RCBO outgoing consist of 6nos.6/10/16/20A 10KA SP

MCB (D-Curve) in a separate compartment with necessary phase

segregation as required by the Electrical Inspectorate.

Kindly confirm, the DB is 4 Way 7 Seg or 6 Way 7 Seg. (As per Boq

outgoing is 6no's of SP MCB for each phase.

Please consider 4nos of SP MCB for each phase as outgoings instead of 6 nos shown in

the tender considering the 4 W DB

17 Electrical Works

Query: In BOQ, SECTION-G -S.No. 107 -The wiring item is in Points or

Running Meter.

(In Sty it has been mentioned as Mtrs, Whereas in Rate it has been

mentioned as Points)

This is running meter only, Please quote your rate for running meter since it is for circuit

mains .

18 Electrical Works

Query: In BOQ, SECTION-G -S.No. 113 & 114 -It has been Mentioned

as Supply, fixing, testing and commissioning of 3Nos. 6A modular type

Universal socket controlled by 1 Each 16A switch in a suitable size

front plate and frame in workstations.

Kindly confirm, 3 Nos of socket is control by 1 Switch or 3 nos of

individual switch.

Please consider only 1 number of common 16A switch for controlling all 3nos of 6A

socket. Individual switch control is not required.

19 Electrical Works

Query: In BOQ, SECTION-G -S.No. 115 -It has been Mentioned as

Supply, fixing, testing and commissioning of 2Nos. 6A modular type

Universal socket controlled by 1 Each 10A switch in a suitable size

front plate and frame in workstations.

Kindly confirm, 2 Nos of socket is control by 1 Switch or 2 nos of

individual switch.

Please consider only 1 number of common 10A switch for controlling 2nos of 6A socket.

Individual switch control is not required.

20 Electrical Works

Query: In BOQ SECTION-M -S.No. 1, The conductor is GI or Cu.

Please consider copper conductor as mentioned in BOQ.

21 Electrical Works

Query: In BOQ SECTION-M -S.No. 1, The conductor is GI or Cu.

Please consider copper conductor as mentioned in BOQ.

22 Taxes

Query: Existing Taxes, Duties and Levy's May be considered, but If any

New Taxes, Duties and Levy's or Revision in rates then it shall be

reimbursed, Hence only the tender may quoted competitively.

Service Tax will be Payable seperately subject to submission of Documentary evidence


Please refer General Conditions of Contract for other Taxes.

23 Mobilisation Advance

Query: Interest Free Mobilisation advance shall be given against Bank

Guarantee, since the interest may not be loaded into the contract sum.

No change in tender conditions

24 Design, Drawings & Detailing's

Query: Kindly clarify the design & detailing is in the scope of owner.

Execution as per the drawings issued will be the scope of the contractor. Certain items

requires for submission of shop drawings will be under Contractor's scope of works.

C

1 Clause- 85.0 - Period of Maintenance

Query:Please provide the Maintenance Period duration for which

Contractor has to Maintain the works, as it is not mentioned in tender

document.

Period of Maintenance” means the specified period of maintenance from the date of

completion of the work as certified by the Engineer and specified in the Contract. This

period is also termed as “Defects Liability Period.

The Defects Liability Period shall be a period of 730 days (Seven Thirty Days)

commencing upon the Date of Issue of Practical Completion Certificate.

2 Clause-9.2 iv - Mobilization Advance

Query: We request you to provide intrest free Advance.


Queries on NIIT & COC

7


3 Clause- 79 - Secured Advance

Query: We request you to provide Secured Advance of 90% of the

invoice value of material as and when the material reaches site for all

the non-perishable items.


4 Clause-69 - Price Variation

Query: We request you to provide the Escalation on POL & Labour also

as the contract duration is 24 months.


5 Clause-43 - Construction Water

Query: We request you to provide water at one point for construction

purpose.

No change in tender conditions. Arranging water for construction is under responsibilty

of the contractor.

6 Clause-43 - Construction Power

Query: We request you to provide power at one point for construction

purpose on chargebale basis.

No change in tender conditions. Arranging Power for construction is under responsibilty

of the contractor.

7 General - Land for Labour Colony, Batching Plant & Site office

Query: We request you to provide rent free land for construction of

Labour colony, Batcing plant, fabrication yards & site office.

No change in tender conditions. Labour Colony is not allowed within site premises.

Erection of Batching Plant, Fabrication Yard , site office is allowed after submission of

proposal by the contractor and approval by CMRL.

8 Excise Duty

Query:Please clarify whether Excise Duty is applicable for the Concrete

manufactured for the project.


9 Tender Form- memorandum - Retention money

Query: We request to consider Bank Guarantee for a value of 5% of the

Contract value against Retention, to maintain a helathy Cash flow at

site.


10 Working hours

Query:Please clarify any working hours to be followed.

Please refer Appendix - 8 , General Conditions of Contract , sr no.14

11 Tender Form- memorandum - Commencement date

Query: We request for commencement date to be 21 days after issue of

LOA.


12 General - Estimate Cost

Query: We request client to provide us the estimated cost of the project

for our scope of works.

This contract is " Item rate based contract" hence contractor to quote best price and

estimated Cost can not be provided.

13 Performance guarantee - Pg - 45 : 5% of contract value;

Pg - 64 : 10% of the contract value.

Query: Please clarify the (%) of performance guarantee to be

considered.

In addition to the Performance Bond/Performance Guarantee in the form of Bank

Guarantee as required under Clause No.5.2 above, as a further security for the due

fulfillment of the contract by the Contractor, 10% of the value of the work done will be

deducted by the Employer from each payment to be made to the Contractor until the

retention money amounts to a maximum of 5% of the contract sum of the work.

14 General - Submission date

Query: As huge quantum of work is involved and lot of working to be

done on all the sections, we request client to consider the date of

submission upto 29.04.2016.


15 BOQ - Schedule - I - Usuage of Flyash

Query: We request client to allow us the usage of Flyash upto 25% in

concrete.

Flyash can be used as per codal provisions for Masonary and Plastering works

16 BOQ - Schedule - I

Query: Item no 56 : Please clarify the whether the quoted rate shall be

only for decorative colour or concrete rate also shall be included.

Cost is including cement concrete mix of M25 grade to a thickness of 65 mm.

17 BOQ - Schedule - I - Item no.68

Query: We presume that the quoted rate is only for the staging to be

required for additional height of 3m.

Extra for plastering exterior walls of height more than 10 m from ground level for every

additional height of 3 m or part thereof and sub item showing 10m & above to be quoted

18 Basic rates - Cement, Reinforcement steel, Structural steel, UPVC and

tiles etc.

Query: We request client to provide us the basic rate for the major

items like Cement, reinforcement steel, structural steel, upvc and other

high end tile items.

Also, please clarify whether contractor can consider the basic rate of

flooring items mentioned in item description for the items of same

nature where the basic rates were not given - ???

Basic rates given in the tender for the respective items only to be considered and other

items as per prevaling best market prices to be considered.

8


19 BOQ - Schedule - III, IV - External Façade works

Query: In the BOQ, basic rates for finishing items were mentioned in

item description, we presume that the basic rates inclusive of all taxes,

duties and landed price at site - Please confirm.

The Basic rates for the material under finishing itemswere mentioned in the respective

item description only for the purpose of selection of particular materal at execution time.

Hence the basic price shall be at Maunfacturer's place / ex show room price. All other

components shall be quoted as part of respective item quoted rates.

20 BOQ - Schedule - III, IV - Item no.83

Query: We request client to provide the unit of measurement in 'Kg' as

it is very much difficult to quote in 'sq-m'

Drawing showing profile, design intent and other information are available. Contrcator to

note the same and to quote in SQM only.

21 General - Built up area

Query: Please provide us the breakup of the built-up area statement

floor wise.

All levels of floor plans are given as part of tender drawings. Contractor can be

calculated for their record.

22 Electrical - Refer to Sr. No. 15 of BOQ which states “Supply,

installation, testing and commissioning of 63mm dia. approved make

GM single headed fire hydrant landing valves (with pressure reducing

valve, instantaneous female plunger type couplings, chained blank

caps) including making flanged joints by providing necessary nuts, bolts,

gaskets, etc. painting complete as per specifications.”

Query: SIMPLEX query :Hydrant Valves generally do not come with

pressure reducing valves, however orifice plates can be used to reduce

pressure if acceptable. Kindly confirm.

It is available with pressure reducing pressure

23 Electrical - Refer to Sr. No. 17 and 18 of BOQ which states “ Supply and

installation of MS Hose Tray consists of 2 nos RRL type A hoses of

63mm dia x 15 meters long with heavy quality gun metal male coupling

as per IS: 903 combined with 2 Nos of nozzle and branch pipe for

internal hydrants located inside the FCO.

Query:SIMPLEX query : Kindly clarify this item ”MS Hose Tray” and

suggest sub-vender for this.

Kindly get the details from Fire fighting equipment's suppliers like hose,branch

pipe,nozzle etc..

24 In Electrical Works BOQ Section-A,SL No.-1

Query: Please clarify whether the RMU to be consider as

Indoor/Outdoor. Since both of the considering reflecting in the BOQ.

Please confirm.

Please consider the outdoor RMG panel as indicated in the Technical specifiction.

25 In Electrical Works BOQ Section-B,SL No.-21

Query: As per SLD the capacity of Incoming breaker of APFC PANEL

with Harmonic filters is shown as 1600A where as in BOQ it is

mentioned as 800A. Kindly Clarify and confirm.


Query: The size of the capacitor (350 KVAR) given in the BOQ of

MPCC panel is not matching with the SLD (750 KVAR) provided. Please

confirm and clarify.


Query: In BOQ the name as cooling tower & pump panel is mentioned

where as in drawing it is mentioned as Chillar tower & pump panel. Are

they Both same? Please clarify and confirm.

Both are same panel only.


Query:In the drawing UPSB-2 panel is repeated twice. Please confirm

and clarify.

It is phisically separated and having same configuration. However the panel names are

1. UPSB- 2 and

2. UPSB -3


Query:The outgoing of PSB-1 & 5 is mentioned as 32A TPN MCCB in

BOQ where as in drawing it is mentioned 63A TPN MCCB. Please

confirm and clarify.

Please consider as shown in drawing. (ie.) 63A 16kA TPN MCCB -5 Nos.


Query: As per BOQ both the incomer of PSB-6 is 160 A. But according

to drawing both are not the same. Please confirm and clarify.

Please consider as below,

Both the incomer rating is 100A 16kA 4P MCCB and

the busbar rating is 100A 16kA 4P busbar.


Query: Sub lift panel-2 is not reflecting in BOQ. Though it is mentioned

in drawing.

Kindly consider the quantity is 2Nos for S.No.46 (SUB LIFT PANEL-1)


Query: As per BOQ item description we understand that there is not

required to febricate 3 phase EB meter in EB metering panel (for type

A) to keep space provision for this item for metering. Please confirm.





Please consider as per the BOQ (ie.) the size of APFC panel is 350KVAR and incoming

breaker is 800A 50KA TPN MDO ACB with 800A copper busbar.

The panel should be fabricated with all fuses, MCCB / MCBs and should have the

arrangements to have EB metering in the same feeder. However all energy meters will

be supplied by TNEB.

9







Query:As per BOQ item description the UPS capacity is 120 KVAR but

in drawing it is mentioned 160 KVAR. Please clarify and confirm.

Please consider as per BOQ. (ie.) the UPS capacity is 120KVA.

36 In Electrical Works BOQ Section-B

Query: As per drawing there is no interlocking with solar array panel

power source. Is there any synchronization between normal substation

power source and solar power source. Is there any provision to feed the

solar power to MPCC panel independently. Please Clarify.

Interlocking is not required. since synchronisation will take place in solar inverter panel,

there is no need to consider separate synchnisation module in MPCC panel. Kindly

proceed as per SLD. The Syn provision shall be considered part of solar inverter.

D

Approved Makes

1 Sl.No.85 - Mild Steel Rolling shutter - Gandhi / AEGIS / Horman

Query: BOQ - Civil - Item No.45 - Rolling shutter Specification is not

matching the approved vendor specification.

Please quote as per Bill of Quantities.

2 Sl.No.85 - Solid Concrete Blocks - Aeons / Bessar

Query: Bessar is not manufacturing Solid Blocks. Please provide

alternate vendor for Solid Block.

Please consider Aeon.

Besser is manufacturing soild block on requirement basis.

3 Basic Rate are provided in the BOQ for Tiles and Granites.

Query: Please confirm whether the given basic rates are inclusive of all

taxes and trasportation to site.

Basic rates given in the tender is ex-show room price including taxes exculding

transportation, handling etc., .

4 Retention Money

In addition to the Performance Bond/Performance Guarantee

.......................... 10% of the value of the work done will be deducted by

the Employer from each payment to be made to the Contractor until the

retention money amounts to a maximum of 5% of the contract sum of

the work.

Query: Request to Accept Bank Guarantee instead of Cash Retention.

(Or)

Make recovery of retention money @ 5% instead of 10% for ease cash

flow.


5 Extra Items

An amount of 15 % of items (a), (b), (c) and (d) above to allow for

Contractor’s

overheads, taxes, and profits.

Query: Request to pay WCT/VAT, Service Tax, Labour Cess In addition

to 15%.

Service Tax will be Payable seperately subject to submission of Documentary evidence


6 Recovery of Mobilisation Advance

The recovery shall be commenced after 10% of work is complete and

the entire amount together with interest shall be recovered in five equal

instalments in subsequent running bills.

Query: Recovery in five instalment will affect the cash flow. Request to

recover the mobilisation advance on prorata basis.


7 Price Adjustment

Price Adjustment will apply only when the rates exceed or decrease by

3% or more as compared to the estimate rates (RBI Index Price).

Query: Request to relax the + /- 3.0% and pay full escalation.

The Price Adjustment shall be calculated only on the departmental

estimated cost of the work.

Query: Request to calculate Price Adjustment on actual bill value.


8 Secured Advance on Material at site:

Secured Advance against material delivered at site is not payable.

Query: As Lot of Specialised works involved, Request to pay Secured

Advance on 90% of Invoice Value of Material


Queries on Technical Specifications and COC

The panel should be fabricated with all fuses, MCCB / MCBs and should have the

arrangements to have EB metering in the same feeder. However all energy meters will

be supplied by TNEB.

10


9 Variation and Introduction of Taxes

No claim in respect of any variation or introduction taxes or duties or

levies as existing or future, shall be entertained by the Employer.

Query: As GST is expected to be implemented in near future and Tax

Implication due to this is not predictable, Please reimburse the actual

cost diifference in case of any variation or introduction of new taxes.


10 Service Tax

This project is exempted from Service Tax and Cess as per CMRL

Mega notification No: 25 of 2012 hence Tenderer to quote the price

without services Taxes and Cess.

Query: Service Tax Exemption on all Metro Rail Projects has been

withdrawn in Union Budget 2016. If Service Tax is payable during

execution of work, the same shall be reimbursed at actuals.

Service Tax is Payable as exta subject to produce the document evidence to CMRL.

11 List of Approved Make

Query: As per note 2, Contractor has to procure material from only from

first prefered vendor. This condition reduces the negotiation power of

the contractor. Hence the Contractor shall be given full liberty to select

any of approved vendor from the list.


12 Selection of Subcontractor

Query: The Sub-contractors who are satisfying the Criteria are quoting

upto 25% more than the Sub-Contractors who doesnot satisfy the given

criteria. (But, still they are good contractors and sucessfully executed

specialised works in Station building under us to the entire satisfaction

of CMRL). Request to dilute this condition to make tender more

competitive.


13 BOQ Excel File

Query: Please issue BOQ in Excel Format

Generally excel / editable format of BOQ shall not be shared to the bidders as per

CMRL.

14 BOQ Filling

Query: Please allow to submit Printout of Excel BOQ with rates instead

of manual writing.


15 Value Added Tax on Works contract In respect of Tamil Nadu Value added tax ( VAT), reimbursement is as per section 5.

Contractor should not avail composite rate assessment for works contracts Tax under

section 6.

11

Chennai Metro Rail Ltd Pre tender Queries and Reply dt : 31-03-2016

Room DescriptionDimensions Length Width Ceiling Void Room Void Floor Void

1 2nd Floor - OCC Theater 25 24.6 615 2120 10230 0

2 AFC CC & CCHS ROOM 9 9 81 1000 2650 550PAC Room 7.2 2.4 15 2650 550

3 IT EQUIPMENT 10 9.2 92 1000 2650 550

4 AFC ANALYST ROOM 8 7.8 62.4 1000 2650 550

5 AFC SR ROOM 8 6.6 52.8 1000 2650 550PAC Room for AFC SR Room 7.25 2.578 19 2650 550

6 UPS FOR S & T/UPS FOR AFC 10 10.6 106 1000 2650 550

7 TESTING & COMMISSIONING OCC CONTROL ROOM 12.5 9.9 123.75 1650 6430 550

8 ATS 10 12 120 1000 2650 550

9 AFC EQUPIMENT ROOM 8 9.5 76 1000 2650 550PAC Room For AFC Equipment Room & Comm.Equipment Room 7.25 2.578 19 2650 550

CMRL - Construction of Metro Headquarters Building and other Metro Rail Amenities at Anna Salai, Nandanam - Room Dimensions

in Meters Total Sq.M in MM

CHENNAI METRO RAIL LIMITED External Facade works

1

Outer Pane Inner Pane

a Option - I - Asahi BlueliteLH 37/24 Blue

Un coated Neutral of

similar make

Reflective Low e coating

# 2 As per Manufacturer India 37% 7% 15% 0.24 0.28 1.70

b Option - II - PPG Solarban 70 XL(2) Solar blue Blue


similar make



c Option - III - Saint Gobain SKN 765 Blue


similar make



d Option - IV Asahi Green VisionLN 34/22 Green


similar make



e Option - V - PPGSolarban R100

(2) Atlantica Green

GreenUn coated Neutral of

similar make



f Option - VI - Saint Gobain SKN 444 Green


similar make



Air G

ap -

12 m

m th

ick

Inne

r pan

e -6

mm

thic

k H

eat s

treng

then

ed

2

CHENNAI METRO RAIL LIMITEDPROPOSED CONSTRUCTION OF HEADQUARTERS AT CHENNAI

TENDER FOR EXTERNAL FAÇADE AND ASSOCIATED WORKSANNEXURE - I - GLASS SPECTRAL VALUES

Insulated Glass

Make Product Code

Colour / AppearanceType of Coating

Surface of Coating

24 mm Thick Type of Glass Insulated Glass - 24 mm thick (Outer Pane - 6 mm + Air Gap 12 mm + 6 mm thick ) - Both panes are Heat strengthened. BLUE TINTED GLASS

Out

er p

ane

- 6 m

m th

ick

Hea

t stre

ngth

ened

Sha.C U Value (European)Optimum

Performance

Place of Coating

Place of Processing

Visual Light Trans

Light Ref (Ext)

Light Ref (Int)

Solar Factor

Details of the Glass

1Annex - I - GLASS SPECTRAL VALUES - Along with Pre Tender Queries and Reply

Dt. 31.03.16

GROUNDFRL LVL

MYLAPORE, CHENNAI-600 004# 10, KARPAGAMBAL NAGAR,

Chennai Metro Rail Limited

AND OTHER METRO RAIL AMENITIES FORCMRL AT NANDANAM, CHENNAI.

METRO HEAD QUARTERS

METRO HEAD QUARTERS BUILDING -STRUCTURAL GLAZING / WINDOWS &LOUVER DETAILS - SHEET - 1 OF 2

ENLARGED DETAIL OFGLAZING BRACKET

80

80

AS

PE

R E

LEV

ATI

ON

(VIS

ION

PA

NE

L)

AS PER ELEVATION(VISION PANEL)

MYLAPORE, CHENNAI-600 004# 10, KARPAGAMBAL NAGAR,


AND OTHER METRO RAIL AMENITIES FORCMRL AT NANDANAM, CHENNAI.

METRO HEAD QUARTERS

METRO HEAD QUARTERS BUILDING -STRUCTURAL GLAZING / WINDOWS &LOUVER DETAILS - SHEET - 2 OF 2

RECEPTION- TABLE PLAN

SECTION-2 2

PROPOSED HEADQUARTERS AND OTHER

METRO RAIL AMENITIES FOR CMRL AT

NANDANAM, CHENNAI.


METRO HEAD QUATERS BUILDING

Mylapore, Chennai-600 004.

No. 10, Karpagambal Nagar,

design | interiors | engineering | construction management

C.R.Narayana Rao ( Consultants ) Private Limited

www.crn.co.in

India.

CMRL-HQ-ADM-AR15-02-42-204181

1

F.FL

BOOK SHELF - PLAN

BOOK SHELF-INSIDE ELEVATION BOOK SHELF-OUTSIDE ELEVATION

LINTEL LVL

F.F.LF.FL

LINTEL LVL



NANDANAM, CHENNAI.






www.crn.co.in

India.

WARDROBE 2 - PLAN

WARDROBE 2-INSIDE ELEVATION WARDROBE 2-OUTSIDE ELEVATION

LINTEL LVL

F.F.LF.FL

LINTEL LVL

DISPLAY UNIT - PLAN

DISPLAY UNIT FRONT ELEVATION DISPLAY UNIT SIDE ELEVATION

F.F.LF.FL



NANDANAM, CHENNAI.






www.crn.co.in

India.

M/s. Chennai Metro Rail Limited External Façade works

Page -1 Technical Specification – Issued Along with Pre Bid Queries & Replies

Dt. 31.03.16

M/s. CHENNAI METRO RAIL LIMITED

PROPOSED CONSTRUCTION OF HEADQUARTERS AT CHENNAI

TENDER FOR EXTERNAL FAÇADE AND ASSOCIATED WORKS – ADMIN BLOCK

TECHNICAL SPECIFICATION

TABLE OF CONTENTS

S.No Description

A. Section - 1 – Technical Specification

1. Scope

2. General

3. Quality Assurance

4. Quality Control

5. Codes and Standards

6. Façade Contractor‟s Qualification

7. Design Responsibility

8. Performance Requirements

9. Specification of Materials

10. Tests on Materials and Assembly

11. Submittals

12. Samples

13. Product Handling

14. Fabrication

15. Inspection

16. Erection

17. Protection

18. Cleaning

19. Maintenance Requirements

20. Spares

21. Mode of Measurement

B Section – 2 - Particular specification

C Section – 3 - Special Instructions to the Bidders

D Section – 4 - List of Approved Makes

E Section – 5 - Technical Questionnaire - To be filled by the Bidder

F Annexure – A – Form of Performance Guarantee of System

G Annexure – B – Form of Performance Back to Back Guarantee of materials.



Dt. 31.03.16

SECTION – 1 - TECHNICAL SPECIFICATION 1.0 SCOPE

Design, Supply, Fabrication, Erection, Installation and testing of work at all levels and heights, hand over the complete External Façade and Associated works involving the following scope of work:

Unitized with Structurally Glazed panel / Structurally Glazed Punched and Strip window designed with required span of mullion with required numbers ransom for each mullion as per drawing.

Frame less glazing with Spiders / Articulated bolts and M.S Fin / Fin glass with laminated toughened heat soak tested glass to satisfy the structural criteria,

Aluminium framed door with Swing Type and Automatic Sliding door with Laminated / Monolithic Glass with the specified Hardware to satisfy the structural criteria.

Providing Wall and any other type of projections either with laminated sandwiched composite panel comprising 100% virgin Mineral Core sandwiched between Aluminium skins / Aluminium honeycomb panel with supporting system as per structural criteria.

Providing canopy projections either with laminated sandwiched composite panel comprising 100% virgin White Mineral Core sandwiched between Aluminium skin or laminated glass with supporting system as per structural criteria.

Providing tensile roof system with PVC coated polyester fiber with 100% PVDF top coating (PVDF alloy bottom coating) as per structural criteria.

Providing Anodic coated aluminum extruded Louvers with “Z” profile, Aerofoil profile and other specially extruded Louver made out of extruded aluminium with anodized finish of varying size and fixed either on the Glazing system or on the Windows and Ventilators as specified.

Cladding the wall with Natural stone like Granite / Sand stone or any other stone Materials and fixed to satisfy the structural criteria either

a. As part of the Glazing system maintaining the same plane of Glazing / Cladding

system.

b. On the opaque wall with specified dry type fixing method with SS brackets of size as specified.

Providing and installing the façade associated works like Insulation on the Spandrel / Opaque wall as specified, flashing and Cold Bituminous coating on the Opaque wall etc.

System shall be fabricated according to the type of glazing and cladding system called for in the specification using Anodic coated aluminum Extruded Members with specified type of Glass, Fiber cement exterior panel, Gaskets with EPDM or Silicon, Silicon Sealants (Structural / weather) etc and the system shall be erected using the Hot dip Galvanized Brackets for glazing and Aluminium brackets for Metal cladding with necessary fastening system with Stainless steel fasteners, bolts, nuts and screws etc complete.

Protection of the system and materials including glass, metal panels and all other materials involved in the system is sole responsibility of the façade Contractor until the completed works are taken over by the Employer. Glazed panels supplied at site must have a cork buttons at appropriate locations on the exposed glass surface in order to avoid scratches and breakage of glass, while the panels are stocked. Entire frames involved in the Glazing & cladding system shall be protected with self adhesive removable PVC wrapper in order to protect the surface



Dt. 31.03.16

finish. Erected panels shall be protected with appropriate protection methodology in order to protect the erected panels free from damage at construction site. Protection of the supplied and installed façade panels is sole responsibility of the Façade Contractor until the complete works are taken over by the Employer. As part of tender scope, Façade contractor shall adopt appropriate safety & security measures at site of works by means of implementing proper methodology and arrangements made by the Façade contractor and such methodology is strictly complied by his site team until the completed works are taken over by the Employer. Glazing and Cladding system shall be neatly maintained by the Façade Contractor to ensure that the complete system is free from all defects and damages in terms of Materials and workmanship including the replacement of broken glass, if any during the construction stage, etc until the completed works are taken over by the Employer. Work shall be executed by coordinating with the Vendors engaged for various types of works including Façade access system agency as and when is required. In particular, Facade Contractor shall coordinate with Façade access agency by making the provision / cut outs on the cladding works to install the façade cleaning system and equipments including finishing the cladding work neatly to the acceptable level after installation of Façade cleaning equipment as part of tender scope. Work site shall be maintained with neat and clean housekeeping by way of clearing the unwanted materials like broken glass if any, Metal panel scrap, broken stones, packing Materials, damaged fastener, bolts, nuts, screws any other debris regularly and the premises shall be kept clean at all times. Providing the Guarantee for the entire External Façade and associated system to the specified period in an approved format attached with the specification supported by the back to back guarantee from the specialized Material supplier like Extrusions, Glass, Metal panels like Aluminium composite panel, Extrusion coating, Gasket, Sealant, all type of Hardware including Spider, Articulated bolts and patch fitting door etc. Conduct periodical checking of the system including the materials involved in the system during Defects liability period to ensure that the performance of the system and the materials involved in the Glazing and cladding system are free from any defects and damages during the defects liability period.

In general, the detailed scope of works is as outlined hereunder, but will not necessarily be limited to:

Complete Facade cladding for the building comprises the following:

Complete exterior walling for the building comprises the following elements: Factory fabricated Unitized structural Glazing (4 sided Glazing) consisting of color

anodic coated to the specified thickness of approved colour aluminium specially extruded sections with Insulated / Laminated / Monolithic Heat treated glass of approved shade & make with Top hung open able panels (part), Silicone sealant both structural and weather, weather stripping gaskets (EPDM/Silicon), setting blocks, support and anchorage system, Protection, Cleaning, Guarantee of the system etc.

Frameless glazing with Laminated / Monolithic Heat treated and heat soak tested

glass of approved shade & make with the specified supporting system like Spiders or articulated fittings supported with the help base framing of Hot dip galvanized structures or glass fin wherever is indicated.

Framed / Frameless fixed glazed panel including Sliding (Automatic) / Swing door

with Laminated / Monolithic Heat treated glass of approved shade & make with the specified supporting system comprising patch fittings or anodic coated aluminium twin rails (top & bottom) wherever is indicated.



Dt. 31.03.16

Cladding with approved shade of Natural stone like Granite as specified.

Fixing of Aluminium honeycomb panels using with aluminium frame works to satisfy

the structural criteria.

Fixing of Ironmongery, Hardware and accessories involved in the Glazing system, Doors, windows and ventilators.

Fixing the Aluminum extruded Louvers like “Z” type, and specialized manufacturer

Louvered like Aerofoil on the Glazing or Opaque wall and window system as part of Glazing and cladding works.

Ironmongery and accessories to all windows and doors.

Façade Cladding works comprising Unitized structural Glazing system, Point fixed glazing with Spider/Articulated bolt with M.S fin / fin glass, Frameless fixed glazed panel with top and bottom rail Doors (Swing type), Tensile Roof, Louvers with extruded special shape profiles, Cladding the Canopies and any other type of projections with Composite panel / Glass, cladding with ACP, Honeycomb panel, Natural stones like Granite (by dry type / wet fixing method) etc as described hereafter shall include but will not necessarily be limited to the following:-

Frames, glass and glazing, spandrel panels, Aluminum / Frameless / Point fixed with fixed panel and Glazed doors, windows and ventilators, Louvers, Vents, finish hardware and fire stop between storey floor slabs, sill level and gap between Mullion and columns. Doors and windows where indicated, inclusive of all accessories, ironmongeries etc

Copings, Soffit trimmers and External ceiling panels for both metal wall claddings and curtain walling system.

Access panels and test clamps. Pull out test for Masonry Blocks, where the clamps are mounted.

Inserts in concrete for the anchorage of all work under this section.

All steel structural framing and beam supports, anchors and attachments required for the complete installation of the whole system.

All caulking, sealing and flashing including sealing at junction with roof waterproofing and exterior wall, flashing at door way and raised kerbs. All sealing / Flashing shall have minimum overlap of 100 to 125mm and the joints shall be sealed with weather silicon sealant.

Sealants within and around the perimeter of all work under this section.

Separators, neoprene gaskets, trim etc.

Inner liner trays to conceal the steel structural supports to the wall claddings, granite cladding and for the protection against heat and humidity.

Isolation of dissimilar metals and moving parts. Finishing and coating of the metal wall cladding system.

Engineering proposals, drawings and data.

Shop drawings, engineering data and structural calculations of the framing, fasteners and claddings stamped by a professional structural engineer approved by the Employer.

Scheduling and monitoring of the work.



Dt. 31.03.16

All samples, Mock ups and test units.

Coordination with work of Principle or main Civil Contractor and other agencies/contractors of Employer.

All final exterior and interior cleaning of the glazing systems, wall cladding system and aluminium doors/louvers etc and conducting field test.

Cost of all hoisting, staging and temporary services.

Cost of full performance test, inclusive of necessary reports at a laboratory approved by the Employer.(As called for in the Bills of quantities)

Guarantees and Maintenance manuals.

Provision for interfacing with exterior window cleaning equipment.

2.0 GENERAL

Structural design and engineering, fabrication and erection of Unitized Structural Glazing / Structurally Glazed punched / Strip Window system, Point fixed Glazing with laminated / Monolithic heat treated and heat soak tested glass with Articulated bolts with glass fin, Frameless Fixed panel at Entrance including Doors (Sliding/Swing) with Laminated / Monolithic Glass, Cladding with Aluminium Composite panel on the Glazing system maintaining the Glazing plane and on the Opaque wall with dry wall system, Cladding the Canopy and any other type of projections with Composite metal panel / Laminated Glass, Providing tensile roofing system, providing Aluminum extruded Louvers with “Z” profile, Aerofoil, cladding with honeycomb panel, Natural stone like Granite with dry type fixing method / wet type fixing to all size and at all level shall form part of the external façade works, which inclusive the submission of the following particulars and details but will not necessarily limited to: A. Pre-award Stage: (Submissions along with Bid for review)

Submission of Project proposal details.

Submission of Schematic drawings including extruded member details.

Submission of Typical details of the supporting arrangements of the system.

Submission of Typical Structural design calculations for main & sub members.

Submission of Typical Jointing / connection details of the system.

Submission of Report on Material proposal confirming to the Tender specification. B. Post-award Stage: (Submissions by successful bidder for review and approval)

Execute Site survey / Building survey prior to submission of shop drawing.

Execute preliminary works such as marking layout and bracket location at site, to verify the site condition prior to preparation of Shop Drawing.

Submission of Shop drawings, engineering data and structural computations of all systems including aluminum framing members, all required glass, paneling materials, Point fixed glazing with spiders / Articulated bolts, Patch fittings Automatic sliding or Open able doors, Canopy works, fasteners, and other accessories.

Submission of details for the system with Top hung open able panel/Entrance doors with or without side panels (Open able/Automatic sliding Door), and other connected works.

Submission of details for a continuous gutter system at each floor level ensuring that the water drained out at lowest floor level collectively.

Submission of details for Honeycomb panel / laminated sandwiched composite panel cladding and its appropriate supporting extruded member details including fastening and sealing the groove.

Submission of details for Granite cladding and its supporting structure and fastening.



Dt. 31.03.16

Submission details for Frame less glazing (Point fixed Glazing) with spiders or articulated bolts /Patch fittings with fixed glazing system with glass fin / M.S fin including necessary structural supports and its entire fastening.

Submission details for Aluminum extruded louvers with necessary Structural supports and its entire fastening.

Submission of details for all types of Glass including Insulated , Monolithic, Insulated glass with Heat soak testing details and Glazing materials, all separators, EPDM, Gaskets, spacer rods, backer rods, trims and Sealant on the Glazing system.

Submission of Joint details for external facade glazing system.

Submission of Joint details for Honeycomb panel / Aluminum composite panel / Granite cladding on the Structurally Glazed frame work.

Granite on the Dry wall with SS Clamps with structural supports and adjoining work if any with dissimilar Material.

Submission of details for all anchors, clips, fasteners, and brackets involved in the entire external cladding work covering make and its structural properties.

Submission of details for all interior trim covers and closures including extruded furring panels to receive dry wall.

Submission of details for all perimeters flashing and counter flashing contiguous to Structurally Glazed panel / window and the overlap of 100 to 125mm shall be considered between the flashing.

Submission of details for Fire stops/smoke seals, flashing using color anodized extruded sections / sheet and sealing of all interfaces with the building Structural members / finishing works internally & externally.

Submission details of smoke seal to close the gap between sill wall and Transom member to cover the gap.

Submission details of Aluminum flashing to close the gap between column face and aluminum member vertically from floor to floor and its fastening with suitable sealant.

Provide hoisting, staging, scaffolding and temporary services as required to execute the entire external façade works.

Submission of details on the proposed Glass processor and their credentials establishing their infrastructure facility / capabilities to process all type of glasses.

Submission of Methodology for glass processing detail including details on cutting, edge grinding / polishing, heat treatment process, processing of Insulated glazing unit.

Provide full scale visual mock up at site based on the approved shop drawing covering minimum 2 floors and with 3 bays, which includes one open able panel and any Architectural special elements and Features shown in the elevation.

Pay all costs and obtain statutory approvals and permits related to the External cladding works like Structural Glazing and ACP works, if any. Water test shall be carried out to ensure that the system has no air and water leakage.

Execute Full scale off site proto type tests, if specified and called for in the Bills of Quantities.

Execute Field Tests – Hose reel Test at minimum 4 locations as approved.

Submission of all Maintenance manuals and Guarantees.

Window washing stage including cleaning the entire façade prior to taking over the work by the Client.

Provide Guarantees of the entire façade System including system design & Performance of the Materials involved in the entire system to the specified period else where in the document in an approved format attached as Annexure – A & B.

3.0. QUALITY ASSURANCE

Unless otherwise specified wind loads factors & calculation, structural design & parameters shall strictly comply with the relevant National Building Code and Indian / International Standard Code. Requirements of regulatory agencies shall comply with all the applicable local codes and Regulations.

Products used in the work shall be produced by manufacturers regularly engaged in manufacturing of similar items and with a history of successful production acceptable to the Employer/PMC/Architect.



Dt. 31.03.16

Submission of certificate establishing that the Glass thickness and heat treatment process with desired strength have been selected and specified to the Glass processor to provide the strength is meeting the specified Structural and thermal performance criteria.

Submission of substrate test report for each exterior use of both Structural and weather sealant compatible with Glazing and cladding system Member finish, all types of Glass, Metal panels, Natural stone and Louvers etc prior to procurement of sealant.

4.0 QUALITY CONTROL

Each bidder shall maintain the approved shop Drawings, details and typical Design calculation as per the items listed above at site office & elsewhere for review of PMC/Architect during inspection of work.

Shop and field materials and workmanship activities shall be subject to inspection by the Employer/PMC/Architect and their representative at all times. Such inspections do not relieve the Contractor from obligations to provide materials conforming to all requirements of the Contract Documents and Industry standards for material quality and finish.

5.0 CODES AND STANDARDS: All Materials & Workmanship shall comply with the following standards as minimum:

Code No Particulars

IS 875 Design Loads for Buildings and Structures.

IS 1893 Criteria for Earthquake resistant design of Structures.

BS 1474 Design Loads & Properties of Metals & Alloys.

IS 8147 Specification for use of Aluminium Alloys on Structures.

AS 2047 Specification for use of Aluminium Alloys on Structures.

BS 6262 Specification for Safety Glazing in Buildings.

AS 2208 Safety Glazing Materials for use in Buildings.

CPSC 16 CFR 1201 Specification for Safety Glass use in Buildings.

AS E 1288 Selection & Installation of Glass in Buildings.

AS E 1300 Determining Load resistance & Deflection in Glass.

ASTM C 1036 Specification for Float / Flat Glass.

ASTM C 1048 Specification for Heat Treated Glass.

ANSI Z 97.1 Specification for Tempered Glass - Safety Glazing

ASTM C 1172 Specification for Laminated Glass.

ASTM C 1376 Specification for coated Glass products.

ASTM C 509 Specifications for Sealing Materials.

ASTM E 773 Specification for Seal Durability of Insulted Glazing Unit.

ASTM E 774 Specification for Sealed Insulted Glazing Unit.



Dt. 31.03.16

ASTM C 864 Specification for Compression sealed Gaskets.

ASTM C 1115 Specification for Silicone Rubber Gaskets.

ASTM C 1135 Specification for Properties of Sealants.

ASTM C 1184 Specification for Structural Silicone sealants.

ASTM C 920 Specifications for Joint Sealants.

AS 1580 Specification for Test Methods of Material finish.

ASTM C 794 Specification for Test Method of Elastomeric joint sealants.

ASTM C 1087 Test methods for determining compatibility with accessories.

AAMA 501.2 Test methods for Field Test - Hose reel & pressure Box test.

6.0 EXTERNAL CLADDING CONTRACTOR’S QUALIFICATION:

All the work shall be executed only by pre-qualified specialized contractor under single point responsibility, who is having experience in the engineering, fabrication, finishing and installation of Unitized Structural Glazed panel/window including glazing and sealing of glass, Aluminum composite panel cladding, Patch fitting door and fixed panel and connected works of similar nature of this project.

Subcontracting any part of work by specialized Structural Glazing agency is specifically prohibited, except for that which may be approved by Employer/PMC/Architect in writing prior to award of the Contract. If approval is granted to subcontract installation and/or glazing, approval is contingent upon the supervision of his subcontractor(s) by the same full time supervisor who co-ordinates and supervises full scale mock-up work at the testing laboratory and installation at the project.

7.0 DESIGN RESPONSIBILITY:

Contract documents define design intent and performance requirements of the Employer/ PMC/Architect. Details shown in Architect‟s tender specification and drawings for items covered in the entire bid package are Indicative but preferred profiles and System. External Cladding contractor is charged with total responsibility for design and structural calculations, submission of details at project proposal stage, site survey and shop drawing based on approved project proposal detail, fabrication, installation, warranties, certifications and related documentation.

External Cladding contractor shall be solely responsible for the design, fabrication and erection of the systems, and all work covered in the bid package and to perform entirely by their own staff. No sub contract at any stage is acceptable.

Design metal framing members to accommodate expansion and contraction of components without buckling, creating stress on glass, structural components and fasteners, joint seals or other damaging effects when subject to a surface temperature range of 5

0C to100

0C.

Design Structural glazing system (or) Point fixed glazing system with spider / articulated bolts including fixed panel with Sliding or side hung open able door if any must accommodate the applicable wind loads and Lateral force and be capable of sustaining its own weight. The glass restraints must be designed to satisfy the applicable loads. Computations defining the loads and stresses developed must be provided. All friction grip connections must be substantiated by computations.



Dt. 31.03.16

Design extruded louver windows/ventilators at various levels in the Buildings and its Structural supports and fastening. Computations defining the loads and stresses developed must be provided.

Glass for frameless point fixed glazing system shall be designed to satisfy the requirements of AS 1288. Heat treatment process such as Heat strengthened/Toughened Laminated glass either with clear or tinted glass with required thickness. Lamination inter layer in between 2 skin glass shall be Sentry glas (R) of DuPont make or approved equivalent make.

Drainage system with pressure equalization concept / system must be incorporated into the structural frame proposed for Glazing and Cladding with Metal panels like laminated sandwiched composite panel.

Water and air leakage and condensation if any on the system shall be drained or discharged to the exterior surface of the façade at each floor level / at lowest floor level. All interior spaces must be effectively sealed to ensure that the pressure equalization system will operate adequately even under the most severe rain periods and also during severe wind effect expected in the area.

Water movement must be controlled and necessary built in arrangement shall be provided in the system to drain out the water from the system at each floor level / at lowest floor level in such a way to prevent any water being retained within the system.

Drainage system shall be sealed off at every floor to prevent infiltrated water from leaking into lower floors as well as prevent water entering into the inside of the Building from the in built drainage system by way of in built Barrier System.

8.00 PERFORMANCE REQUIREMENTS 8.01 System Design Criteria:

a. General: Performance design shall comply with the current edition of the relevant standards. The building envelop systems including canopy under the façade scope of the works shall be watertight and weatherproof (Air, Water, Humidity infiltration), able to support all dead loads, seismic loads, live loads and other loads imposed on the building façade envelope and any projection including Canopy system accommodate all movements due to base structure movements and deflections and thermal expansion and contraction and generally retain its appearance for the service life of the system without failure or breakdown of individual materials and components.

8.02 Dimensional stability: All works carried out by the Façade contractor shall have adequate dimensional stability to function properly and prevent damage to adjacent or applied work by other contractors. Design shall allow for the following: 1. Expansion and contraction. 2. Building movement. 3. Dimensional changes due to weather change.

8.03 Design Pressures:

Wind Pressure and Seismic load used for design shall satisfy the relevant code but the wind pressure shall not be less than the minimum wind pressure of 200 Kg/Sqm under Service load (Design Load) condition as specified and seismic forces shall be as derived by adopting


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Replies Dt. 31.03.16

the relevant code. The wind pressure specified here has been calculated based on IS 875 with the defined wind speed, zone and terrain condition as service load and as minimum requirement subject to verification of the Facade Contractor. However, maximum wind pressure with dead loads & live load – 75 kg/Sqm and combination thereof shall be considered for system design. Live load is mainly to accommodate the cleaning person load.

Design calculation for wind pressure considered that the wind speed design basis of 50 m/s and the same shall be considered by External Façade contractor also for verification of wind pressure specified. Design load for seismic condition shall be considered by the Bidders in accordance with IS 1893.

8.03 Proof load:

Proof load for testing purpose shall be considered as 1.5 times of the Service load, which will be considered for acceptance criteria of the system design and the materials involved. Minimum drift for seismic load condition test shall be considered as 8 mm (Minimum) subject to verification by the Façade Contractor at an appropriate time which will be considered as acceptance criteria for Seismic Load testing at laboratory.

Minimum design pressures inward and outward and acting perpendicular to glass Installed to any profile & shape of Glass, laminated sandwiched composite panel sandwiched with 100% virgin noncombustible and non-toxic Mineral between Aluminium skins, and Natural stone like Granite slab etc (including return surfaces) shall be as per the requirements of the code of practice for design load other than earth quake for buildings and structures - IS 875 and Lateral forces as per IS 1893. Latest revision of Code shall only be referred.

8.04 Corner Effect:

Determine the maximum service load, design wind pressure and lateral forces applicable for that particular building to satisfy the corner effects of the façade system including glass and other façade materials. Negative pressures if determined considering the service load, wind pressure and Lateral forces using the respective codes will make allowances for corner effects as described in the code. Corner mullion shall only be used wherever the Glazing and cladding are shown at the corners to any angle.

8.05 Performance Criteria for Materials:

A. Metal members Metal members supporting glass, laminated sandwiched composite panel and granite slab shall be as follows:

Perpendicular to the plane of the wall, net deflection of framing members shall not exceed 1/175 times span, or 19mm, whichever is less. Span is defined as the distance between anchor centre lines in the case of Mullions. Where a sealant joint occurs between a framing member and a relatively stiff building element, framing member deflection shall not exceed ½ of the nominal joint width, or less if required by sealant manufacturer. Where a framing member runs continuously past a deflecting support, the support deflection shall be added to the member deflections. Span is defined for transom occurs between the Mullions. Depth of Mullion and transom shall be maintained uniform.

In the plane of the wall, deflection of framing members shall not reduce the glass bite below 75% of the design dimension, and shall not reduce the glass edge clearance below 25% of the design dimension or 3 mm, whichever is greater. Restrict deflection further if required for assembly and fit of components.

Stresses shall not exceed the allowable values established by the Specification listed under “Standard References”. In no case shall allowable values exceed the yield stress. Where permitted by code, a 1/3 increase in allowable stress for wind or seismic load is generally acceptable, but not in combination with any reductions to combined loads.




Performance criteria at test pressure and loads (1.5 times design pressure and loads) for metal members supporting glass and aluminium composite panels shall be as follows:

Net permanent deflection of framing member shall not exceed 1/1000 times span. There shall be no failure or gross permanent distortion of framing members, anchors

or connections. At connection points of framing members to anchors, combined movement of

anchor shall not exceed 4.5 mm in any direction, nor 3mm set after load is removed. B. Glass:

Provide glazing assemblies to withstand normal conditions, without failure, loss of weather tightness or Deterioration includes the following:

i. Coated Glass: Development of any visible defects in coating. ii. Heat Treated Glass: Allowable surface Compression shall range from 27 Mpa to 48 Mpa based on the

type of heat treatment proposed in the tender. When Strengthening process results in essentially parallel ripples or waves the

deviation from flatness at any peak shall not exceed 0.230 mm within the 265 mm of a leading or trailing edge or 0.076 mm peak to valley with in the Main body or size of the sheet.

Direction of the ripples shall be consistent and in conformance with Design intent.

Heat strengthened and Tempered Glass should be horizontally processed with the

Automatic glass cutting fabrication completed before Heat treatment. Heat strengthened glass shall have surface compression of 5500 PSI plus or minus 1500 psi predetermined as project requirement. Tempering glass shall have a surface compression of 10000 Psi.

iii. Insulated Glass: Moisture or Dirt between panes.

Development of condensation between panes.

Damage to Internal coating, if any.

Development of other indication of seal failure.

iv. Laminated Glass: Bubbling or visible delaminating of the Interlayer Material.

Color change indicating deterioration of the Laminate.

Bubbling or delaminating of the film.

Quoted rate of Structural Glazing item of Bills of quantities shall include for arranging inspection of glass at manufacturing / Processor place either in India or overseas by the representatives of Employer, PMC and Architect's (one from each as minimum) during the time of glass processing.




For the purpose of glass Design and selection, design wind pressure as specified in the Bills of Quantities and seismic load as per code shall be assumed to have 60 second duration.

Upon first application of design wind load and live load pressures, statistical probability of breakage shall not exceed 8 per 1000 at 60 second load in vertical application.

Probability of breakage due to anticipated thermal stress in glass shall not exceed 8 per 1000 at 60 second load in vertical application. Exposure classification shall be in accordance with Exposure D ANSI A 58.1.

1 pane per 1000 for lites set over 15 degrees off vertical under design wind pressure as specified in the Bills of Quantities and seismic load as per code.

Glass proposed for the mock-up shall be identical (including strength) to the glass being provided for the corresponding zone on the actual building. Mock-up glass, which breaks, shall be replaced with the same type glass, and the tests continued. Repeated glass breakage shall constitute a failure.

Glass deflection shall not exceed 1/ 90 times span (span defines only shortest span of the panel glazed in the system).

Glass design shall accommodate Thermal movements resulting from the range of 120 F and Material temperature range of 180 F.

Glass thickness for exterior pane shall not be less than 6 mm and safety glazing requirements supercede the strength requirement specified.

Allowable maximum stress shall be as follows;

Heat strengthened glass - 18 to 25 Mpa Tempered / Toughened glass - 27 to 48 Mpa Laminated Tempered glass - 35 to 48 MPa

Submit the wind pressure and thermal analysis indicating that the specified maximum deflections and probabilities of breakage not exceeding the prescribed minimum.

Use the Material including glass from one Manufacturer. Cut Glass to size and shape and drill holes prior to heat treatment process. Manual edge grinding shall be prohibited. Use only Automatic machine for edge grinding and chamfering.

For Insulating Glass use desiccants either molecular sieve or silica gel of blend of both.

Spacer construction shall be as per manufacturer‟s specification. Continuous Bent spacer of black color shall be used. Sealing system of Insulated panel shall dual seal system.

Fabricate Glass with bite and edge clearance dimensions including tolerances as recommended. Provide venting of internal airspace if the units are transported through higher elevation and subsequently seal the vent.

C. laminated sandwiched composite panel.

For the purpose of selection of laminated sandwiched panels, the design wind pressure as specified in the Particular specification shall be assumed to have 3 second duration.

The allowable design stress for all Metals Panels shall not exceed the recommendations made by the supplier. Refer relevant section herein for additional details on structural performance characteristics.




No cladding element shall sustain permanent deformation or failure under a loading equivalent of test pressure (1.5 times the design wind pressure).

The cladding shall be so fabricated and installed to accommodate all the likely expansion and contraction of all components.

Panel deflection shall not exceed 1/60 times span (Span defines only shortest span of the panel proposed in the system for fixing).

There should be no colour variation in the installed panels as a result of polarized lighting on the aluminium panels.

D. Sealant:

Weather Sealants shall withstand movements up to the limits prescribed by the manufacturer. Exposed sealant surface either (structural or weather) sealant shall not crack or bubble. Non-staining / Non-bleeding weather sealant shall be used for exposed weather sealant.

Authorized trained personal and recommended type of nozzle depends on the nature of application only to be employed by the fabricator in the glazing work. (Either shop / Factory or site glazing) to ensure the proper adhesion and also to avoid air entrapment in the sealant applied area.

E. Visual Requirements:

Profiles: The Façade contractor shall design building façade envelop components so that sizes, profiles, dimensions and style satisfy the performance specification. The drawings included in the tender are to be used as a guideline. Indicative variations on the shop drawings. The Façade contractor shall not commence production of extruded aluminium sections until all profiles have been accepted and endorsed.

Applied finishes: The design of the components, selection and application of finishes and installation procedures shall ensure a high standard of applied finish protection during construction. The Façade contractor shall develop and implement procedures to eliminate scratches, marks and blemishes to finished surface during construction. Indicative procedures in the installation procedures.

Flatness and alignment: The design of the components, fabrication and installation procedures shall ensure a high standard of flatness, joint and edge straightness and alignments of mating surfaces of joinery. Close attention shall be given to cutting and cut edge treatment procedures, stiffening and the tightening of fixing and fastenings which may cause distortion or warping.

Service life of the building envelope shall not be less than 50 to 60 years (Indicative). F. General:

Provide moveable joints to accommodate the full range of manufacturing tolerance, construction tolerance, field tolerance, thermal movement, floor sag, beam sag, and column settlement and concrete creep. Joints shall accommodate the worst possible combination of effects so as to prevent internal stress, failure, deterioration or failure of weather seals. It is the responsibility of external cladding contractor to verify the deflection of the structural members and structural movement tolerance etc. with Architect/Structural Engineer.




Thermal components of joint movement shall be based upon a minimum material temperature increase of 50

0 C and decrease of 50

0 C relative to the time of installation.

Design for these assumed temperature changes regardless of surface areas exposed to the exterior and interior. Assume the entire cross section has uniform temperature. For thermal design other than joint movement, design the winter surface temperature shall be the 99% design dry bulb winter temperature from the ASHRAE handbook; the design summer surface temperature shall be at least 100

0 C.

All components including adhesives and sealants shall be capable of withstanding, without failure, design winter temperature to design summer temperature with simultaneous specified loads.

Joint widths (Open Groove system) shown on the Drawings are for design profile only. It is the responsibility of the external cladding contractor to establish the joint width, and to verify the seismic displacement requirements with the Architect / Structural Engineer.

Design for dead load in combination with other specified pressures and loads shall be the responsibility of the external cladding contractor.

The general method of water leakage control shall be internal gutters which are drained to the exterior and utilizing the Pressure Equalization System. Vertical walls, which consist solely of glazed openings, shall have an isolated gutter cavity at each glass perimeter, so that any leakage is confined to and wiped from the leakage origin. All exterior wall joints shall be backed up by a gutter system at each level.

All thermal insulation and metal support frames shall be held away from face of wall to provide a 25mm (minimum) cavity for water leakage control Seal and tape all insulated joints.

Glazing details shall permit glass replacement after initial construction is completed and during maintenance period, if any breakages to the glass take place in such a way both Vision glass and spandrel glass shall be replaced from the exterior. However, the glass replacement vertically in the installed structural glazed system will not be permitted under any circumstances, during construction /execution stage.

Performance requirements for resistance to air leakage, resistance to water leakage, seismic racking and thermal performance are specified below elsewhere under Test on Material and Assembly test.

In general, performance requirements specified for test mock-ups and samples also apply to actual building, and vice versa. Variations in criteria over the surface of the building, such as wind pressure and Lateral force are taken into account in testing of mock-ups and samples. Where certain performance is required for specific test conditions of mock-up and samples, that same performance is also required for the actual building, for natural conditions equivalent to or less severe than the test conditions.

9.0 SPECIFICATION OF MATERIALS

9.01 ALUMINIUM

A. Extrusions:

Alloy for Aluminium extrusions shall be of aluminium alloy 6063-T6 Conforming to BS 1474 or - 63400 (H9) grade conforming to IS 8147, provided with minimum wall thickness as required for structural members. Standard commercial tolerances as listed in „Aluminium Standards and Data shall apply to finished, fabricated and assembled materials. Strict tolerance shall apply where required assuring proper functions of glass and glazing materials. Use only 6063 - Structural grade alloy for support Brackets. All aluminum brackets to have serration.




B. Finishes:

All exposed surfaces shall be free of scratches and other serious blemishes.

Aluminum sections shall be extruded sections shall be finished with AC25 grade Architectural quality electrolytic color anodic coating of approved color Field cutting of anodized components shall not be permitted.

9.02 GLASS:

A. General:

Annealed / Flat glass. Heat Treated Glass – Heat strengthened and Tempered glass.

B. Type of Glass:

Monolithic Glass. Insulating Glass. Laminated Glass (Safety Glass)

C. Type of work Involved Glass:

Vision Panel. Spandrel Panel. Sloped or Curved Vision / Spandrel panel. Façade Panels - Point fixed Glazing with spiders or articulated bolts. Sky Light Panels.

D. Spectral Properties and Characteristics of Glass Covers:

Thickness of Glass. Type and Source of Substrate Glass. Type of coating. Position of coating. Light Transmittance in percentage – % of visible day light Transmitted. Light Reflectance in percentage – % of visible day light Reflected. UV Transmittance in percentage. Solar Energy Transmittance in percentage. Solar Energy Reflectance in percentage. Solar Energy Absorption in percentage. Solar factor in percentage. Shading Coefficient - Fraction of total solar energy transmitted when compared to that

transmitted by clear glass – 3 mm thick. U -Value - BTU per Hr / Sq.ft per Deg. F Difference or Watt per Hr/Deg. Luminous Efficacy. Relative Heat Gain.

E. Selection of Glass:

Glass selection for the project is generally based on the specific requirement mentioned under vertical fenestration in Energy Conservation Building code published on 2007.

The following parameters are governed for the selection of Glass based on WWR

(Window wall ratio of the Vertical Fenestration) :

Minimum Visual Light Transmission




“U‟ Factor of the Glass including Frame. Solar Heat Gain coefficient of the Glass.

F. Glass Description:

All Safety Glass shall conform to the requirements of AS 2208 or CPSC 16 CFR 1201.

Provide Heat strengthened or Tempered or Toughened glass as required to withstand thermal stresses and to meet the design wind pressure as specified in Particular specification or as per IS 875, whichever is higher.

Provide Tempered or Toughened glass heat soak processed for the Point fixed glazing using spider / Articulated bolt / patch including sliding / side hung door to withstand thermal stresses and to meet the design wind pressure as specified in Particular specification or as per IS 875, whichever is higher.

It is the responsibility of the contractor to determine the maximum service load, design wind pressure and lateral forces applicable for that particular building to satisfy the corner effects of the façade system including glass and other façade materials. Negative pressures if determined considering the service load, wind pressure and Lateral forces using the respective codes will make allowances for corner effects as described in the code.

Heat strengthened and Tempered / Toughened glass shall be examined by the glass manufacturer to detect and discard any lights, which exceed the following tolerances:

Where the strengthening process results in essentially parallel ripples or waves, the deviation from flatness at any peak shall not exceed 0.230 mm with in the 265 mm of a leading or trailing edge and the difference between adjacent peaks shall not exceed 0.076mm with in the main body or size of the sheet.

Where bow tolerance and wave tolerance differ, the stricter requirement shall

govern. Direction of ripples shall be consistent and in conformance with Architectural design intent. The specification defines nickel sulphide stones as a glass material defect.

It is recommended that an inspection procedure be used to eliminate the incidence

of Nickel Sulphide (NiS) inclusions in all Heat strengthened / Tempered glass. Alternatively, heat soak procedure shall be followed to minimize the incidence of NiS induced failures if specified in any particular item of work like Point fixed glazing with spider / Articulated / Patch fittings including the sliding / side hung open able doors on prior approval by Employer/PMC/Architect.

Insulated glass shall have double edge seals. The primary seal between spacer and glass shall be a continuous butyl tape with no skips or voids. The preferred primary seal shall be poly isobutylene (Pib). The spacer shall be of Black colour and the same shall be bent to shape of glazed unit profile and the bent black spacer shall be filled with desiccant drying agent of Molecular sieve or silica gel or blend of both. The secondary seal shall be Structural Sealant of Dow corning or approved equivalent Single / Two part silicon sealant.

The secondary seal shall completely cover the spacer with no voids or gaps, and

shall be continuously bonded on both plates of glass. The required thickness of the secondary seal shall be determined by calculation and

verified by testing of samples as specified. The Glass panel shall be separated by a de-hydrated air space specified. Edge seal construction of the insulated until shall be able to withstand at least three

times the stress caused by the design wind pressures specified in the Bills of




Quantities. Insulated Glazing unit fabricator / processor shall be used only approved sealant / product with the prior approval of the PMC/Architect.

Edge seal construction of the insulated unit will be tooled to a smooth clean surface

between the interior and exterior glass edges. Samples shall be submitted to Employer/PMC/Architect for approval. The approved sample shall be retained at the job site and Structural Glazing Panel / Window manufacturer‟s assembly facility for ready reference.

In compliance with the warranty policy of Glass Manufacturer‟s for insulated and

reflective glass, written confirmation approving the glass installation procedures for this project shall be provided.

The secondary seal of Insulated Glazed unit shall completely cover by the silicon

Gaskets as part of glazing system and shall be continuously bonded on both plates of the Insulated glass.

G. Glass Accessories:

Sealant backers within glazing pockets and continuous glass spacer pads at glass butt joints shall be black heat cured silicone rubbers (type one where sealant adhesion is to be prevented and type two where adhesion is desired).

Properties falling within the range listed below are accepted provided that adequate glass support and weather seals are achieved.

S.No Properties Minimum Maximum

1 Durometer + or – 5, shore A 60 70

2 Tensile strength in KPa 138 138

3 Elongation in % 200 200

4 Tear, die B, kPa min. 13 15

5 Compression set

6 Maximum % 22 hrs. at 100 deg.C 20 25

7 Maximum % 22 hrs. at 175 deg.C 40 50

8 Heat age for 70 hrs at 100 deg.C 40 50

9 Durometer A, change pts. Max + 3 + 3

10 Tensile, change % max - 10 - 10

11 Elongation, change max % - 20 - 20

Setting Blocks Setting Blocks shall the black solid extruded silicone rubber with a hardness of 70 +/- 5

Durometer Shore “A” with a minimum length of 50 mm and a minimum width correspond to the glass thickness. Locate the setting blocks at quarter points.

Side Blocks Located side blocks within the upper half of each jamb for each light. Blocks shall be 55 +/-

5 Durometer Shore “A” solid EPDM or Silicone. Install blocks with 3 mm clearance between block and the bearing surfaces.

Side blocks are not required where an individual glass lite is continuously sealed with

silicone at 2 or more edges. Resistant plating or non-condensation shall be used, if it is in a




non-wetting location. All stainless steel bolted connections shall include lock washers, lock nuts or other locking device.

9.03 LAMINATED SANDWICHED COMPOSITE PANEL. (ACP)

i. GENERAL

Laminated sandwiched composite panel - Skin Aluminum shall be of aluminium alloy 5000 series – H22 to H24 conforming to BS 1475.

All composite aluminium panels shall have a minimum total thickness of 4 mm as specified in the Particular specification.

If specified, the composite aluminium panel shall be installed using the rain screen principle, with provision for natural ventilation of the space between the cladding panels and the structural wall.

The composite cladding panels shall be of the cassette type, framed with an extruded aluminium profile.

All fasteners shall be concealed within the panel joints. All fixing and joint details shall be designed to provide for the expected thermal expansion and contraction. The fixing of these panels shall accommodate the expected structural movements in the building.

With a gloss of 30% according to Gardner Scale, the installed composite panel surface shall not have irregularities such as oil canning, waves, buckles, and other irregularities when viewed at any position not less than 15 degrees to the true plane of the panel.

All brackets and similar attachments used for the fixing and erection of these panels shall be of hot dip galvanized steel.

All fasteners and anchors including nuts, washers etc. for brackets and similar attachments for fixing and erection of the system shall be of non-magnetic stainless steel of 300 series - 316 Grade.

ii. PRODUCT COMPOSITION:

Laminated sandwiched composite panel sandwiched between two aluminium skins used for opaque wall cladding shall have 0.50 mm thick aluminium solid sheets of Alloy 5000 – H22 to H24 and composed with 3 mm thermoplastic core of 100% virgin Mineral core.

Total thickness of laminated sandwiched composite panel shall not be less than 4 mm.

Total weight of panels shall be in the range 7.3 to 7.6 KG/Sqm.

Composition:

Skin Material : Aluminium Alloy with grade of 5000 – H22 to H24 conforming to BS 1475 to 0.5 mm thick

Core Material : 100% virgin Mineral white core and it shall be Anti-toxic after

burning to become water (H2O) and carbon dioxide (CO2).

Skin aluminum sheet of laminated sandwiched composite panel shall be manufactured by the aluminium coil manufacturers using Direct-casting line, ensuring that the specified compressive strength of the skin aluminium is achieved.




Aluminium coil shall be procured from the approved source only. Methodology describing the sandwiching of the aluminium skin with Mineral core satisfying the fire clause shall be submitted for review. Sandwiching the panel with skin aluminium by adopting Glue technology shall only be accepted & Self adhesive panel protected with PVC film and sandwiched with core by removing the PVC sheet, which is called as film technology is not accepted. Bidder shall verify the type of sandwiching the panel and make sure that the panels are fabricated complying with the specified requirement.

iii. Colour and coating:

Exposed surface of the panel shall be coated with Poly vinylidene Fluoride coating (PVDF) complying the “specification for coated coil for exterior building applications” issued by ECCA (European Coil Coating Association) or AAMA (American Aluminium Manufacturers Association) and to achieve the quality level of each Association.

Exposed Surface (Top Side) of the laminated sandwiched Composite metal Panel shall finish with Poly vinylidene Fluoride coating (PVDF) containing 70% Kynar 500 based Lumiflon fluorocarbon coating and 30% resin. The coating shall be on top side as described below :

Solid Color - Total dry film thickness on the topside shall be in the range of 23

to 25-µ minimum.

Metallic Color - Total dry film thickness on the topside shall be in the range of 30 to 35 µ minimum.

Un Exposed (Reverse side) surface of the laminated sandwiched Composite metal Panel ie. facing the wall surface shall finish with Polyester based wash coating or mill finish to a thickness ranging from 7 to 10 Microns as per Manufacturer‟s specification. Wash coat on the reverse side of the panel is to protect the panel against the possible corrosion problems and hence Bidder to verify the compliance of the coating requirement on the panel.

Colour variation of PVDF coating – Metallic finish on the exposed surface (Top side) of the laminated sandwiched composite panel with aluminium skins is not acceptable under any circumstances. Also, they should be no colour variation in the laminated sandwiched composite panel with aluminium skins on the installed condition as a result of polarized lighting on the laminated sandwiched composite panel. The colour variation due to the orientation of the flacks of PVDF coating in the dry film (Referred as “Flop”) and due to metallic finish is not an isotropic, as referred by the manufacturer is not acceptable and hence the fabricator is full responsible to procured entire quantity in one consignment and make sure that the manufacturer has coated the coil as single batch for the entire quantity. Also, the fabricator shall ensure that the panels are installed on the project by following the directional arrow marks provided by the manufacturer both on the surface of the protective film and on the back side of all metallic finished panels. If the colour variation is still noticed at the time of supply of panels or after the erection of the panel at site, Façade Contractor is sole responsible to replace such panels with new one maintaining the uniform shade and colour of the facade at no cost to the Employer.

Virgin core of Mineral used for sandwiching the aluminium skins shall be 100% virgin core and no recycled virgin core shall be used. Bidder to verify the compliance of the use of 100% virgin & the manufacturer certificate shall be produced ensuring that the laminated composite panels are sandwiched with 100% virgin core and the panels are sandwiched by using Glue Technology, Compatible with virgin core of Mineral and PVDF coating on the skin.




Finished surface shall be protected with a self adhesive peel off foil with two layers of white and black, tested to withstand at least six month exposure to local weather condition, UV resistance properties without losing the original peel off characteristic or causing stains or other damages on the coated surface of the laminated sandwiched composite metal Panel. If the stain or any damage noticed after peel off, such panel shall be replaced with new one of the same shade and colour by the façade Contractor.

Minimal properties of coating and colour of panels:

1. Pre – Treatment : Polyvinylidene Fluoride (PVDF) coating consists of 70% Kynar - 500 based Lumiflon based fluro carbon coating and 30% resin.

2. Top Side Solid Colour : Two Bake System with total dry film thickness on the top side of the panel in the range of 23 to 25-µ minimum and the coating consist of a conversion coating, an inhibitive primer and Lumiflon-based fluorocarbon coating. Metallic Colour: Three coats - Three Bake System or Two coats – Two Bake System adding with Metal pigments or Natural Pearl pigments with total dry film thickness on the topside in the range of 30 to 35 µ minimum and consist of conversion coating, an inhibitive primer and Lumiflon-based fluorocarbon coating added with Natural Pearl pigments.

3. Reverse side Polyester based wash coating or mill finish to a thickness not less than 7 to 10 Microns.

4. Coating Standard European Coil Coating Association - ECCA American Aluminium Manufacturers Association – AMMA.

5. Colors – Gloss 30 to 80% as per ASTM D 525 - 89

6. Hardness H - F – H / 2 H

7. Hardness - Pencil 2 H as per NCCA 11 – 5.

8. Formability (T Bend) No Cracks at 1 or 2 Tas per NCCA 11 -19 and ASTM 01737 – 62.

9. Reverse Impact Cross Hatch

No pick off under 62 as per NCCA 11 – 5.

10. Pencil Hardness HB - F

iii. Minimal properties of skin Aluminium skin – 0.50 mm thick:

S.No Description Mechanical Properties

1 Yield Strength 15.5 Kg / Sq.mm Grade of 5000 – H22 - H24 as per ASTM E-8.

2 Modules of elasticity 7000 Kg / Sq.mm as per ASTM C393.

3 Bond integrity (Vertical pull)

120 Kg / Sq.Cm as per ASTM C-297

4 Deflection temperature 115 Deg as per ASTM D 648




5 Sound transmission loss 26 STC as per ASTM E413

6 Manufacturing Process of Coil

Direct continuous Casting line ensuring that the specified Compressive strength is achieved.

7 Manufacturers of Coil Alcan or Alcoa or 3 A composites

iv. Minimal Mechanical & Physical properties of Aluminium Composite panel – 4 mm thick:

S.No Description Mechanical Properties

1 Tensile Strength 4.9 Kg / Sq.mm as per ASTM – E 8

2 Yield Strength 4.5 Kg / Sq.mm as per ASTM – E 8

3 Elongation 14 % as per ASTM – E 8

4 Flexural Elasticity 4060 Kg / Sq.mm as per ASTM – C 393

5 Thermal Expansion 1.20 mm per M per 50 Deg.C

S.No Description Physical Properties

1. Weight in Kg / Sqm Ranging from 7.3 to 7.6 Kg/ Sqm

2. Specific Gravity 1.38

3. Thermal Expansion 1.2 mm / M / 50oC as per ASTM D 696

4. Thermal Conductivity 0.39 K cal m. h.0C as per ASTM C 976

5. Thermal Resistance 0.19 m2 Ci Kcal as per ASTM D 976

v. Minimal Test Properties of Aluminium Composite Panel – 4 mm thick:

S.No Description Test Properties

A. Chemical Resistance :

1. HCL No Change after 5 units as per ASTM D 1308.

2. H2SO4 No Change after 5 units as per ASTM D 1308

3. Mortar No Change after 5 units as per ASTM D 605.2

4. Detergent No Change after 5 units as per ASTM D 2248.

B. Weather ability :

1. Colour Retention Maximum 5 units after 4000 Hours as per ASTM D – 2244.

2. Gloss Retention Maximum 70% after 4000 Hours as per ASTM D – 523.

3. Chalking Maximum 8 units after 4000 Hours as per ASTM D – 4214.

4. Salt Spray resistance Aluminium Blisters - 10 - Scribe - 8 after 3000 Hours and under Salt Fog 35 Deg.C as per ASTM D – B 117.




5. Humidity Resistance No Change after 3000 Hours at 100 % RH x 35 Deg.C according to ASTM D - 2247.

6. Humidity-Thermal

Scribe - 8 at 35 Deg. C as per ASTM D - 2244. No Blister at 10 cycles at 24 Hours x 100% RH. No Crack at 37.8 Deg.c after 2 Hours x 18 Deg.C and after 4 Hours x 24 Deg.c - No crack.

7. Condensing Humidity / Water Immersion Resistance

None to Vary few H 8 blisters at 100% RH x 54.4 deg.C after 2500 hours as per ASTM D 4585.

C. Adhesion :

1. Dry No change as per Method 8 of ASTM D-3359.

2. Wet No Change at 37.8oC after 24 Hrs.

3. Boiling Water No change at 100oC under 20 mm depth.

4. Abrasion Resistance 20 Litres as the criterio specified in AAMA standard and 70 Litres / mil as per ASTM D-968 under Falling sand.

D. Fire Safety :

1. Spread of surface flame (BS / ASTM)

class " 0 "

2. Ignitability class " P "

3. Heat Evolved class " 0 "

4. Smoke Developed class " 0 "

5. Fire Propagation class " 0 "

6. Flame Retardancy Normal

Note: Laminated sandwiched composite panel (ACP) shall be tested by the

manufacturer to meet the above test criteria and Manufacturer test certificate shall be produced by the Façade Contractor.

9.04 Honeycomb panel cladding:

The honeycomb panels shall be of 25 mm thickness. The panel shall consist of two skins of flat smooth Aluminium alloy AA3005, with an outer skin thickness of 0.7 mm and inner skin thickness of 0.5 mm. Panel width will be to a maximum of 1500 mm and of variable lengths up to 4500 mm (manufactured as per the site requirement) with panel edges on all four sides shall be closed

The panel shall be formed in controlled factory conditions using a pre-treated corrosion resistant core of honeycomb Aluminium having a core diameter of 19 mm and foil thickness of 0.076 mm.




The panel will be coated on the exterior/exposed surface with coil coated PVDF finish, and on the inner surface with primer coating.

The horizontal and vertical joints shall have a recessed joint of standard width of 15

mm and shall be incorporated facilities for allowing adjustment of 1 mm.

The panels shall be secured to a support system by means of a fixing side extrusion pop riveted to the outer and inner skin fixed at appropriate centers to proprietary metal clamp. The 15mm wide joint shall be covered with a 10 mm metal cover extrusion, supported by a spring clip as per the proprietary design of the panel manufacturer.

The panel shall be screwed / fixed over the substructure by using aluminium anodized box section to satisfying the structural design criteria specified. Installer shall erect the

secondary and primary substructure within the tolerances of span/1000 of plumb line and level per support (non-cumulative to a maximum of 2 mm). Aluminium alloy for substructure shall comply with ISO 6063. Anodic coating on Aluminium substructure (wherever applicable) and its specified alloy shall comply with IS 1968-1996. The substructure shall be fixed by using hot dipped galvanized (HDG) MS brackets with wedge type/RAWL PLUG stainless steel anchor fastener/HILTI or equivalent chemical

fastener. The brackets shall allow for a vertical and horizontal alignment tolerance of 12.5 mm. A Nylon/Rubber bush shall protect joints between any two dissimilar metals.

Flashing shall be used for the top and bottom of the cladded surface and at the requisite sill openings. The flashing shall be formed in requisite widths and standard lengths of 3 meters, of PVDF coil coated Aluminium to standard panel colours with supports at appropriate centers. Flashing edge shall be silicon sealed to prevent water ingress.

External flashing shall be riveted to and supported on substructure with a vertical and

horizontal alignment tolerance of 12.5 mm. Aluminium alloy for substructure shall comply with IS 6063. Anodic coating on Aluminium substructure (wherever applicable) and its specified alloy shall comply with IS 1968-1996.

9.05 Tensile Roof

a. General

Design, Engineering, Patterning, Fabrication, supply and installation of the tensioned membrane structures to any shape and profile at all levels including, Design, Engineering, Patterning of Architectural Stretchable Membrane, cables and related perimeter hardware. Supply of Architectural Stretchable Membrane, cables, complete perimeter attachment system, and all normally associated components. Fabrication of Architectural Stretchable Membrane, Delivery of all supplied components to the project site, steel member design and documentation including preparation of engineering & shop drawings for both Tensile Fabric and associated Steel frame works as main & secondary system etc, but not limited to.

Protection of Tensile structure till taking over by the Employer as a finished product, maintaining the work site with neat Housekeeping by clearing the unwanted materials regularly and keeping the premises clean at all times. Periodical checking of the structure and Materials involved in the Tensile roofing works during Defects liability period to ensure that the works and all materials are free from any defects and providing the performance guarantee for the entire works to the specified period in an approved format.

The Architectural stretchable Membrane for the main roofing shall be PVC coated polyester fiber with 100% PVDF top coating (PVDF alloy bottom coating).




All calculations and drawings shall be endorsed by a Registered Structural Engineer employed by the CONTRACTOR certifying that the structural design complies with the design criteria, codes and standards as listed hereinafter.

All fabric structures shall be designed so no life safety issue is created in the event of a loss of a part of the fabric. The fabric structure shall not rely completely on the fabric for structural stability. The tensioned membrane shall conform to the current relevant standards and to the requirements of the statutory authorities.

Structural Steel - Mild steel C.H.S / S.H.S / R.H.S as per Indian Standard and Sand blasting as per IS code and epoxy primer, base coat and exterior PU with 2 coating and End plates and bolts for stainless steel material 316 grade and GI wire ropes.

The steel structures shall be provided as per approved design and drawing to receive the membrane with approved shape and profile, fixing of base Plates, Tubes & Angles with full welding, Grinding of overall steel structure, Painting, Finishing of MS materials by using roller paper, sand paper & emery paper.

b. Codes & Standards

All Materials & Workmanship shall comply with the following standards as minimum:

Code No Particulars

IS 875 Design Loads for Buildings and Structures.

IS 1893 Criteria for Earthquake resistant design of Structures.

BS 1474 Design Loads & Properties of Metals & Alloys.

IS 8147 Specification for use of Aluminium Alloys on Structures.

AS 1441 Method of Test for Coated Fabrics

AS 1530 Methods for Fire Tests on Building Materials, Components and Structures

IS:2062 Hot Rolled Low, Medium and High Tensile Structural Steel

IS:800 Code of practice for general construction in steel.

IS:814 Covered Electrodes for Manual Metal Arc Welding of Carbon and Carbon Manganese.

IS:816 Code of practice for use of metal arc welding for general construction in mild steel

IS:817 Training and Testing of metal-arc Welders (Part 1 & 2)

IS:808 Dimensions for Hot Rolled Steel Beam, Column, Channel and Angle Sections

IS:961 Structural Steel (High Tensile)

IS:1363 Black Hexagonal Bolts, Nuts and Lock Nuts and Black Hexagonal Screws

IS:1364 Precision and Semi-precision Hexagonal Bolts, Screws, Nuts and Lock Nuts

IS:1367 Technical Supply Conditions for Threaded Fasteners.

IS:3757 Specification for High Strength Structural Bolts

IS:3139 Dimensions for screw threads for bolts and nuts (Dia range M42 to




M150) [covered in IS 4218 : Part 5]

IS:2016 Specification for Plain Washers

IS:3613 Acceptance tests for wire flux combination for submerged arc welding

IS:1852 Rolling and cutting tolerances for hot rolled steel products

IS:2074 Ready Mixed Paint, Air Drying, Red Oxide Zinc Chrome, Priming – Specification

IS:875 Code of Practice for Structural Safety of Building - Loading standards.

IS:1893 Recommendations for Earthquake Resistant Design of structures

IS:4000 Code of practice for high strength bolts in steel structures

IS:4353 Submerged Arc Welding of Mild Steel and Low Alloy Steels - Recommendations

IS:823 Code of procedure for manual metal arc welding of mild steel

IS:1181 Qualifying Tests for Metal Arc Welders (engaged in welding structures other than pipes).

IS:1182 Recommended Practice for Radiographic examination of Fusion - Welded Butt Joints in Steel Plates.

IS:2595 Code of Practice for Radiographic Testing.

IS:3658 Code of Practice for Liquid Penetrations Flaw Detection.

IS:5334 Code of Practice for Magnetic Particle Flaw Detection of Welds.

IS:1477 Code of Practice for Painting of Ferrous Metals in Buildings and Allied Finishes

IS:801 Code of Practice for Use of Cold Formed light Gauge Steel Structural Members in

IS:806 Code of Practice for Use of Steel Tubes in General Building Construction.

IS:7205 Safety code of Erection of Structural Steel work.

IS:7215 Tolerances for Fabrication of Steel Structures.

IS:1161 Steel Tubes for Structural Purposes – Specification

IS 811 Cold formed light gauge structural steel sections

IS 6610 Specification for Heavy Washers for Steel Structures

IS 12843 Tolerances for erection of steel structures

IS 3600 Method of Testing Fusion Welded Joints and Weld Metal in Steel: Part 2 Beam impact (charpy V-notch) test

IS 1024 Code of practice for use of welding in bridges and structures subject to dynamic loading.

IS 1261 Code of practice for seam welding in mild steel

IS 1323 Code of practice for oxy-acetylene welding for structural work in mild steels

IS 1395 Low and medium alloy steel covered electrodes for manual metal arc welding




IS 2879 Mild steel for metal arc welding electrodes

c. Material Specifications

Technical Properties Requirements Standards

Yarn PES HT 1100 Dtex TERSUISSE

Weight 1050G/Sqm – 31oz/sqyd EN ISO 2286-2

Width 178 cm (-1mm/+1mm)

Total thickness 0.78mm

Tensile strength (warp/weft) 420/400 daN/ 5cm 480/450 Lbs

EN ISO 1421 ASTM D 751-00 Cut Strip Method

Tear resistance (warp/weft) 55/50 daN 105/100 Lbs

DIN 53.363 ASTM D 751-00 Trapezoid Tear Method

Adhesion 12 daN/5 cm EN ISO 2411

Flame retardancy

Euro Class – B-s2, d0/EN 1350 - 1 Rating: M2/NF P92-507 • B1 /DIN 4102-1 • BS 7837 • Test 2/NFPA 701 CSFM T19. Group 1/AS/NZS 3837 • ASTM E84 • VKF 5.2/SN 198898

Surface treatment Floutop® T2 (High concentration PVDF)

Back side treatment Weld able PVDF (for a better resistance to pollution of the back side of the fabric)

1002 Fluotop T2 (back PVDF) capitalizes on the excellent PVDF weathering and without changing the making up process allows a better aesthetical performance of the membrane under any shape and from any angle. Technical data have above are average values with a +/- 5% tolerance.

Additional information

Coating thickness at the top of the yarns

350 µ

Total thickness 0.78mm

Light transmission 8.5% NFP 38511

Thermal values Transmission Reflexion Solar Factor Visible transmission Visible reflexion

ASHRAE standard 74-1988 Ts 6% Rs 78% g 12% - -

EN ISO 410 Ts 6% Rs 82% g 9.5% Tv 4.5% Rv 91.5%

UV transmission T-UV 0% --

Global thermal conductivity*

Vertical position: U = 5.6W/m2

C Horizontal position: U = 6.4

W/m2 C

Acoustical weakening index 14 dBA ISO 717

Extreme working temperatures

- 30/+70 C in static position

Quality management system

-- ISO 9001

d. Fabrication of Fabric Panel




General:

Fabrication shall only be by an approved specialist fabricator experienced in the work.

Fabric shop drawings shall include all information necessary for the fabrication of the fabric membrane. They shall include size and shape of envelope, type and location of shop and field connections, size, type, and extent of all heat welded seams.

The fabricator shall exercise necessary care to plan and assemble the sections such that the assembly has no shop patches. Splices, if any, shall be patterned into a symmetrical and repetitive geometric arrangement within the assembly, shown on the shop drawings and where feasible hidden by structural members. He shall exercise great care in marking, cutting, aligning, checking, welding seams and additions as well as general handling and soiling prevention procedures to produce a smooth uniform surface with even curved edges free from irregularities and interfaces lacking wrinkling, cuts, abrasions, stains of marks, surface imperfections or welding aberrations. The fabric shall be cut along marked lines to an accuracy of +1mm and -1mm. 4. The fabric membrane shall be fabricated in a sizable, clean, properly equipped and systematically established factory shop condition specialized in the fabrication of tension membrane.

All membrane shall be patterned using finite analysis computer modeling. The membrane shall be cut using the latest CAD/CAM manufacturing technology with a tolerance of -1mm, +1mm. Manufacture of membrane to be undertaken in a purpose built membrane production facility with Quality Assured

Engineering data and structural computations of Patterning of membrane in FORTEN 3000 professionals software.

Cutting of membrane pattern in "Hi-tech Auto Matrix" world class suitable cutting Machine.

Fabric Joints:

PVC joints shall be formed using ONLY high frequency equipment to a tolerance of +1mm, -1mm.

The fabricator shall carefully plan his assembly to ensure that seams are always single laid and that a cut edge does not face uphill.

Joints shall be symmetrical as specified by the cutting pattern. No short pieces or selvage will be permitted.

All fabricated joints shall have a minimum of 90% of the total strength of the coated fabric in strip tensile testing. All structural joints shall be fused in accordance with industry standards and shall maintain the integrity of the coating.

Hole punching

At positions where bolt or other penetrations of the fabric is shown or required, holes shall be punched using a sharp 1 mm oversized punch. Holes shall be neat and have uniform edges.

Rope Edges

Rope edges shall be formed using VPDM 90 hardness polypropylene or approved polyester rope of minimum diameter 12 mm. All add-on details to the fabric shall use the same fabric jointing procedures as for structural joints.




Field Splices

The structure fabricated using field splices shall be limited to places where factory seaming is not possible and applied only where shown and approved by the Architect.

Where splices are not specified and the fabricator proposes the use of same, full description including details of location and design shall be provided to the Client / PMC / Architect for approval.

Packing

The sub-contractor shall be wholly responsible for employing particular measures to prevent any damage occurring to the fabric coating and/or the base cloth. The fabric shall be folded in such a manner as to minimize sharp creases and folds. All materials shall be packed in substantial crates and shall be designed to protect the materials contained against hazard both during transit and whilst stored at the site.

Erection

No trade shall have access to, or work from the fabric, unless authorized by the subcontractor in writing.

Method of Erection

Erection shall only be executed by the fabricator‟s experienced installation supervisor. Such person shall have at least 10 years experience in tensile membrane structures installation. They shall attend all membrane erection actions at the site. Provide guidance where necessary and appropriate.

The erection procedure shall be examined with respect of practicality and compatibility with other work on the project. Where the sub-contractor proposes to use a different basis for the erection procedure, full details shall be submitted for approval.

Preparation for Installation of Fabric

A clear and level site shall be provided for undertaking erection and assembly procedures of the fabric element. The CONTRACTOR shall arrange for activities on the site to co-operatively fit in with the erection procedure of the fabric membrane.

Prior to commencement of erection, the sub-contractor shall check all contact surfaces to be in contact with the fabric for smoothness, and remove causes for rips and/or scratching during the installation of the fabric panels.

The sub-contractor shall provide ground sheets where the membrane is to be dragged across a surface. Prevention of chaffing of the surface is required at all times.

The Main CONTRACTOR together with the sub-contractor shall limit access to the area where the fabric is to be installed to only the subcontractor‟s personnel during the preparation and installation of the fabric structure for proper protection. The fabric shall be protected from damages upon installation.

Installation of Fabric

The sub-contractor shall install the fabric structure in a sequence and with sufficient bracing to ensure stability of the structure.




No creasing or folding of the fabric around sharp corners will be permitted. The fabric shall not be abraded in any manner.

Pretension

The minimum pre stress in the membrane shall be 2kN/m type II PVC in both the warp and weft. The structure is to be tensioned after erection to maintain a taut smooth surface to minimum of +10%, -10% specified pre-stress levels. Ensure instrumentation for measurement of pre-stressing levels is approved by the Client / PMC / Architect and confirm to appropriate International Standard specifications.

The fabric shall be stressed uniformly to avoid local over stresses. The Client / PMC / Architect shall be informed of any condition, which is unexpected or causes concern.

Damage occurring during the installation sequence may be temporarily repaired with field patches; however, permanent repairs shall be made with full panel replacement from seam to seam or seam to approved splice.

Cleaning

Clean the fabric membrane after erection. Remove all signs of dirt and panel markings where visible by the naked eye from 6 meters from the fabric.

Final Inspection

The specialist sub-contractor shall give one full working day‟s notice to the Client / PMC / Architect on completion of installation of tensioned membrane and shall execute immediately any adjustments, making good damage or defects.

Wrinkles

There shall be no wrinkles in the completed membrane that in the Client / PMC / Architect‟s opinion are visually objectionable whether viewed internally or externally. Some tolerance on uniformity of the tensioned fabric against wrinkling is accepted.

As a guide isolated wrinkles up to 200 mm long should be limited to a maximum of one only per 200 sq. meter area of fabric. Minor wrinkles are accepted as being expected around convergence points. For the purpose of this clause, a wrinkle shall be a fold in the tensioned membrane in the pre-stressed condition in still air, and which is visible from the ground below the structure.

Patches

Minor patching resulting from events on-site during erection shall be permitted at a maximum number of one only per 200 sq. meters area of fabric. Patching is only to be carried out where the damage shall be rectified is relatively minor and the effect of the patching is not visually dominant. Patching shall be carried out in an approved manner using appropriate seaming equipment and techniques.

e. Steel works :

Scope of Works

The work shall consist of the design, supply and fabrication of all the steelwork for the support of the tensioned membrane structure(s) as shown on the drawings, and includes surface treatment/painting, storage, delivery to the site, connections and their fastenings and miscellaneous attachments.




The work shall consist of the erection of all the above stated steelwork and includes scaffolding, erection, and field welding, bolting, and making the steel to steel connections, connections to anchor bolts, permanent grouting and repairs to surface treatment.

Codes and Standards

All steelworks shall comply with General Specification. All structural steel shall comply with; • IS 2062. Fusion welding quality steel (Fe 410W Grade A) with minimum yield stress of 310/250 MPa shall be used for the structural steel works. The structural steel shall be cleanly rolled to proper dimensions and weight subject to Permissible tolerances as per IS: 1852. Carbon steel pipes shall conform to IS 1161 or IS 1239 of Grade YST-310/240 or Higher.

Handling and Storage and Protection

Handle and store steelwork items carefully and in such manner as to avoid damage and to protect from the elements. Proprietary items shall be stored as recommended.

Make good damage to conform to the original specification or replace completely. Protect all surfaces from damage from any cause whatsoever, and where necessary, cover with a protective membrane or a strippable temporary coating. Remove all temporary protective measures on completion.

Welding

Provide an experienced and competent operative to supervise welding. Submit evidence that all welders are capable;

When directed by the Client / PMC / Architect, keep a site record that identifies the welders responsible for major welds.

Plan the fabrication and erection of structural steelwork to avoid the need for the site welding. Site welding will not be permitted unless Approval is given by the Client / PMC / Architect.

Where site welding is permitted follow the procedures described below:-

Surfaces to be welded must be clean, free from paint, grease, contaminants dry and free from condensation. Where the steel is damp or the temperature is low then warming with a low temperature flame may be used. Thermal indicating. crayons may be used to determine the plate temperature and the area preheated; Protection from the weather: provide adequate protection to shield the welding from the weather. Tent type structures made from fireproof and waterproof material may be used to shield the weldment from the wind and rain.

Such temporary structures to be mounted on stable scaffolding supports, and a stable platform to be provided for the welder. Where welding to hollow sections is required ensure draughts are prevented from blowing through the section.

Electrodes: bake on site at a temperature between 100/C and 150/C and where necessary store in heated quivers for use at the welders convenience.

Power supply: may be from a transformer or generator to provide a three phase power supply of the required voltage. Locate the generator or transformer as close as possible to the welder to prevent a drop in voltage along the cables length. Ensure all the cables




are as short as possible, routed away from the path of construction vehicles, and adequately protected.

Earth run: adequately earth all electrical plant. Ensure the welding return from the weldment is adequate in cross section and correctly connected and earthed.

Weld detail: ensure the welded joint is of the correct profile and fit up. As a general guide do not carry out welding where the gap is less than 1 mm or more than 3 mm unless a backing strip is provided. Where a backing strip is provided the weld gap is not to exceed the greater of 5 mm or the thickness of the material being welded. Adequately support all welded joints with props or restraints that ensure relative movement of the fusion faces is prevented;

Work in confined spaces: provide adequate ventilation and formulate plans of evacuation and escape before the work commences.

Technical specifications of welding:-

Wherever specified in the drawings or instructed by the Client / PMC / Architect welded laps shall be provided and paid for separately unless specifically included in the item or work.

The welding of bars shall be done in accordance with IS:816A, IS:2751, IS:9417 and as specified on the drawings and instructions. But welding between the ends of bars in line whereby the stress is transferred across the weld will not be permitted. No welding shall be done at the bent in a bar.

Following sizes of electrodes shall be used for lap with longitudinal beads:

Bar diameter (mm) 6 10 20 32 40

Electrode size (mm) 2 2.5 3.5 5 5

The thickness of weld shall be 0.2 diameter of the said smaller diameter bar unless otherwise specified in the drawings. The length of longitudinal bead to weld cold twisted deformed bars shall be 12 diameters of the bar of which not more than half the length shall be permitted for a continuous bead in any case.

The CONTRACTOR shall employ only a qualified and tested welder specifically trained and experienced in welding of reinforcement bars to execute the welding of laps to the complete satisfaction of the Client / PMC / Architect.

Before doing the welding of bars at site the CONTRACTOR shall make minimum 3 joints and get them tested in a approved laboratory (including x-ray testing of welds if required) at his own cost. The CONTRACTOR shall be permitted to do the welding only after the satisfactory test certificate from the laboratory is obtained. Whenever the welder changes similar tests shall be carried out again.

The following precautions must be taken for welded laps:

If the cold twisted deformed bar to be lapped has an untwisted end at the lapping point, the same portion shall be cut off prior to welding up to a length of at least 10cms from such end.

Bars shall be free from rust at the joints to be welded.

Bars shall be aligned and kept in proper axis in order to minimize crookedness in bar after welding.

Slag produced in welding after alternative run should be chipped and removed by rush.




Electrode should not be lighted by touching the hot bar. Base Plates and Anchor Bolts:

Base plates supported on concrete, whether shop attached or shipped loose, shall be furnished and set on shims or leveling plates. Grouting shall be by the Steel work Sub Contractor.

Anchor bolt locations shall be furnished by the steelwork subcontractor and used by the CONTRACTOR to install the bolts to the required tolerances. The CONTRACTOR shall check carefully the setting of the bolts to the proper position prior to pouring of concrete of Anchor Fastener shall be considered. Anchor bolts shall have nuts and washers and shall have threads protected during the concrete pour. Damaged threads shall be repaired or be cut to permit full tightening of nuts.

Where dissimilar metals are in contract or where like metals are fixed in just a position in a situation where exposed to the weather and corrosion due to crevice effect is likely, separate the mating or contacting surfaces by one of the following means:-

By coating one (or both) of the contact surfaces with two (2) coats of zinc or barium

chromate based primer,

By coating as above, two (2) coats bituminous or zinc rich paint.

By inserting continuous strips of non-hardening chromate or pressure sensitive

PVC tapes

. Fastening & Other Materials:

All screens, bolts, nuts, washers and rivets in wetting locations shall be 300 series non-magnetic stainless steel of AISI 316 grade. Fasteners in non-wetting locations can be cadmium plated or an approved equal.

Fasteners in non-wetting locations can be cadmium plated or an approved equal. All fasteners 12mm diameter or less can be non-magnetic stainless steel of AISI 316 Grade of 300 series.

Provide lock washer or other locking device at all bolted connections.

Weep hole filters shall be 45 pores per 25mm open cell plastic coated urethane foam, compressed 30 to 50 percent.

Slip Pads: Provide non-flammable eel slip, nylatron, high impact polystyrene or

approved equal slip pads between moving parts at all expansion connections. Provide minimum thickness of 1.5mm for nylatron and polystyrene, and a 3 mm for eel slip. Do not use nylatron or polystyrene in close proximity to a field weld.

Finishes

All structural steel works shall be painted (both priming and finish coat) according to the classification in conformance with IS 12944.

Provide minimum dry film thickness of 225 Microns Single or Multiple coats with primer coat of minimum 75 microns as desired by the manufacturer for the concealed surfaces and 250 Microns Single or Multiple coats with primer coat of minimum 75 microns as desired by the manufacturer for the exposed surfaces. Only Low VOC paint satisfying IGBC criteria shall be used (Either Epoxy or Polyurethane).




Hot dip Galvanizing on steel wire / rods / rope shall be carried out in accordance with IS specification conforming to IS 2629 (recommended practice for Hot dip galvanizing of Iron and steel) and 4759 (Hot dip Zinc coatings on structural steel and other allied products).Mass of Zinc coating shall be as per clause no 6.1 (Table No 1) and thickness of coating shall be calculated as per clause no 9.2.1(b).If the steel fabricated articles thickness is 5 mm thick and over, mass of Zinc coating shall be as minimum (or) average 610 gm/ Sqm and covert the mass of Zinc coating in to thickness, the coating shall be minimum of 86 Microns. Test procedure shall be in accordance with IS 2633.

9.06 STAINLESS STEEL

Spiders, articulated bolts, splice plate, brackets and fixtures used in point fixed glazing system and Patch fittings or extruded twin style door used in Frameless glazing system shall be made of Non magnetic stainless steel of 300 series - 316 Grade and the surface shall have 300 Mill finish. Fiber gaskets and shear bolts used in Point fixed and Frameless fittings glazing system shall be of approved make and Non magnetic stainless steel 300 series of 316 Grade with surface finish of 300 Mill.

Bidders to make sure that there is no contact between metal and glass or any other dissimilar material under any circumstances

9.07 STRUCTURAL STEEL:

Fabrication, Erection and approval of Steel Structures shall be in compliance with IS: 800 and other relevant Indian Standards for general construction and design. All Structural steel shall conform to IS 2062 Gr. „A‟ (for thickness up to 20 mm) & IS 2062 Gr. „B‟ (for thickness above 20 mm). Structural steel grade shall be fy 250 or YST 240 conforming to the relevant IS codes.

All structural steel works shall be painted (both priming and finish coat) according to the classification in conformance with IS 12944.

Provide minimum dry film thickness of 225 Microns Single or Multiple coats with primer coat of minimum 75 microns as desired by the manufacturer for the concealed surfaces and 250 Microns Single or Multiple coats with primer coat of minimum 75 microns as desired by the manufacturer for the exposed surfaces. Only Low VOC paint satisfying IGBC criteria shall be used (Either Epoxy or Polyurethane).

Hot dip Galvanizing on steel shall be carried out in accordance with IS specification conforming to IS 2629 (recommended practice for Hot dip galvanizing of Iron and steel) and 4759 (Hot dip Zinc coatings on structural steel and other allied products).Mass of Zinc coating shall be as per clause no 6.1 (Table No 1) and thickness of coating shall be calculated as per clause no 9.2.1(b).If the steel fabricated articles thickness is 5 mm thick and over, mass of Zinc coating shall be as minimum (or) average 610 gm/ Sqm and covert the mass of Zinc coating in to thickness, the coating shall be minimum of 86 Microns. Test procedure shall be in accordance with IS 2633.

NOTE: Where finishes one not specified or noted on the drawings, all such metal shall be

finished in a manner consistent with similar work and necessary to conform to the design intent.

Welding Electrodes shall conform to IS: 814 & AWS E 6013 for thickness up to 20mm and AWS E7018 for thickness above 20mm. The mechanical characteristics of the welded joints and welding procedures shall be as per IS: 816 Welding joints in the structural steel frame works shall be tested randomly on 10% of the joint in overall welded joints. The testing on welding shall be done by any one of the methods as follows as per Employer/PMC/Architect approval.




Radiography

Ultrasonic

Liquid penetrant

Magnetic particle

Radiography film interpretation 9.08 FASTENING & OTHER MATERIALS:

All screens, bolts, nuts, washers and rivets in wetting locations shall be 300 series non-magnetic stainless steel of AISI 316 grade. Fasteners in non-wetting locations can be cadmium plated or an approved equal.

Fasteners in non-wetting locations can be cadmium plated or an approved equal. All fasteners 12mm diameter or less can be non-magnetic stainless steel of AISI 316 Grade of 300 series.

Provide lock washer or other locking device at all bolted connections. Weep hole filters shall be 45 pores per 25mm open cell plastic coated urethane

foam, compressed 30 to 50 percent. Slip Pads: Provide non-flammable eel slip, nylatron, high impact polystyrene or

approved equal slip pads between moving parts at all expansion connections. Provide minimum thickness of 1.5mm for nylatron and polystyrene, and a 3 mm for eel slip. Do not use nylatron or polystyrene in close proximity to a field weld.

9.09 SEALANTS:

i. General Requirement:

Locate and identify all sealants by product name on Shop Drawings. In general, sealants for the following locations :

Structurally Glazed Panel, Window Joints & Glazing Systems Joints. Exterior perimeter joints between Structurally Glazed Panel, Window systems

and adjacent, contiguous surfaces. Internal seals, splices and beds that may be either shop or field installed during

fabrication or erection of units or modules of the project Structural Glazing Panel / Window systems.

All sealant shall be tooled as a separate operation after application.

Sealant back-up material – double adhesive tape for Glazing shall be open cell dense Polyurethane foam of product code no. V 2200 of Norton Grind well – Saint Gobain make conforming to ASTM C 509 and as per Sealant manufacturer specification.

In using specified sealants or approved alternates, strictly observe the printed instructions of the sealant manufacturer regarding joining size limitations, mixing, priming, and application. Where printed instructions are indefinite on the use of a primer, a primer shall be used. Unless printed instructions advice to the contrary, do not apply sealants when substrates are wet or when the temperature is below 40deg.C.

All structural silicone glazing should be conducted in the shop or in a controlled environment (clean room) and under controlled temperature set-up at the job site.

Single source sealant responsibility is mandatory. Hence, use only the products from single manufacturer on the entire project. Exceptions will not be tolerated. Unspecified




sealants will be required to be removed from the project and the proper products reinstalled at the applicators expense.

Unless otherwise specified, use only the Sealants whose manufacturer will provide a qualified representative to:

Visit the shop / site of fabrication and the project site prior to initiation of work to

ensure proper installation of his materials. Review all applications as a function of the submittals process. Provide testing for adhesion compatibility and non-staining and return the

results and recommendations in a timely fashion. Arrange for submittals in co-ordination with the fabricator.

Do not use sealants provided by any manufacturer who will not review project details approved and perform testing as required in the drawing and specification. Do not use Elastomer sealants produced by any manufacturer who will not agree to send a qualified technical representative to the project site when requested, for the purpose of rendering advice concerning the proper installation of his materials.

If more than one of the manufacturer‟s products complies with the requirements for any item specified herein, use the specific product recommended by the manufacturer for the particular application or condition of use in each case.

Provide the manufacturer‟s standard color of sealant for fully concealed joints, which has the best overall performance characteristics for the application shown. For exposed joints provide colors as selected by the Architect from either manufacturer‟s standard colors or custom formulated to match adjacent finished surfaces.

Select shape and size of joint filler in consultation with the manufacturer for proper performance in the specific condition of use in each case.

Sealant Standards and properties shall confirm to ASTM 1184 and ASTM 920. Structural silicon sealant shall comply with ASTMC1184 and weather or Joint sealant shall comply with ASTM C920.

Test method of sealant and determining compatibility of the sealant with accessories shall comply with ASTM C794 & C1087.

Execute adhesion testing on shop / field on installed structural and weather seals of the glazing as described below in section elsewhere.

ii. Application:

Silicone Sealant proposed for the project shall be either one-part or two part of Structural grade capable of sustaining dynamic movements.

Weather sealant shall be proposed as neutral cure system, non staining, non bleeding with high performance and properties of sealant complying with ASTM C920, Type-S, Grade NS, Class-25, capable of sustaining dynamic movements.

Single part silicon sealant for Structurally Glazed Panel and Window applications at shop and site glazing shall be DC 995 of Dow corning or approved equivalent.

Two part silicon sealant for Structurally Glazed Panel and Window applications at shop glazing shall be DC 983 of Dow corning or approved equivalent.




Weather sealant for Structurally Glazed Panel and Window applications fabrication of either at shop glazing or site glazing shall be DC 991 HP of Dow corning or approved equivalent.

Weather sealant for Laminated sandwiched Composite Metal panel, corrugated solid sheet and Natural stone cladding with Granite and for any other sealing applications to improve aesthetics shall be DC 991 HP of Dow corning or approved equivalent.

Sealants used for structural and weather sealing applications, all joints which are to be sealed in the field as part of the assembly and installation procedure shall be capable of taking movement capability of ± 50%.

Sealant proposed for the project shall govern the following.

Alternate sealant materials will be considered if technical data sheets and cured and uncured samples are submitted, but not preferred to use.

Polybutene, oleo-resinous, asphaltic, butyl and poly isobutylene sealants and

other oil base sealants are not acceptable for shop and factory use and for field use.

The properties and test performance of the sealant shall comply with the technical

data sheet specified below.

iii. Accessory Materials:

Joint Cleaner : Provide non staining, chemical cleaners of type which are recommended by and acceptable to manufacturers of sealants and sealant backing materials, which are not harmful to substrate and/or adjacent materials, and which do not leave oily residues or otherwise have a detrimental effect of sealant on sealant adhesion or in-service performance.

Joint Primer: Product recommended by, and as verified through adhesion testing, the manufacturer of the sealant for the specific joint surface and condition shall be part of the system and shall be provided.

Tape Type Bond Breaker: Pressure sensitive tape, or other plastic tape, as recommended and tested by the sealant manufacturer to prevent bond of the sealant in the heel of the joint.

Weep and Vent Tubes: Silicone tubing minimum 6 mm inside diameter.

Masking Tape: Use masking tape that utilizes adhesive systems, which will not discolor, or mar the finish of, the substrate to which it will be applied. All masking tape shall be removed within one day of installation. Approved make and compatible with other material shall only be used.

iv. Minimal properties of sealant:

S.No Properties Structural Sealant Weather Sealant

1. System of the Sealant Single Part

Two Part Single Part

2. Colour Black Black Black / Grey

Black / Grey

3. Cure System Neutral cure system

4. Hardness - Shore A 37 43 20 27




S.No Properties Structural Sealant Weather Sealant

5. Tensile Strength at Break in M Pa 2.1 2.1 1.6 1.6

6. Tensile Adhesion Strength in PSI 135 135 90 295

7. Tooling time, min 30 20 30 30

8. Tack free time in hrs. 2-4 0.2 9 5

9. Specific gravity 1.52 1.37 1.4 1.4

10. Peel adhesion to glass in KN / M 8.7 8.7 6.5 6.5

11. Curing Time in days (App. 6 mm Bite).

7-14 3-7 14 14

12. Full Adhesion in days. 14-21 14-21 - -

13. Movement accommodation. ± 50%

14. Maximum joint dimension. 25 x 10 mm 60 x10 mm

15. Application Temperature range. (-) 30°C to+60°C

16. Service temperature range. (-) 60°C to+90°C

17. Elongation @ break in percentage.

700 700 520 520

18. Temperature resistant (-) 50 to (+)100

v. INSULATION MATERIALS:

S.NO PROPERTIES EXTRUDED

POLYSTYRENE (XPS)

ROCK WOOL

GLASS WOOL

1. Thermal Conductivity in w/mK @ 24Deg.C As per ASTM C 518.

0.033 0.033 0.033

2. Compressive Strength in kPa As per ASTM 1621

104-690 --- ---

3. Density in Kg/M3 --- 48 48

4. Dimensional Stability in %. 2.0 --- ---

5. Water Absorption in Vol.% As per ASTM C272.

< 0.10 < 0.20 < 0.20

6. Water Vapor Permeability in ng/Pa.m

2 @ 25.4 mm As per

ASTM E96. 63 --- ---

7. Service Temperature in Deg.C. -54 to -74 --- ---

8. Relative Humidity in % --- 95 95

9. Thermal Resistance in m

2 K/W

(at 25mm Thick) 0.87 0.70 0.70

10. Flame ability As per ASTM E84 Class - 5 Non combustible




10.0 TESTS ON MATERIALS AND ASSEMBLY:

A. Laboratory tests on full-scale off site proto type test (If Called for in Tender).

Unless specified, default test sequence shall be as follows:

Pre load at 50% of inward design pressure.

Air infiltration - Air leakage test – ASTM E 283.

Water infiltration under static pressure (or) static water resistance - ASTM E 331.

Water infiltration under dynamic pressure (or) dynamic water Resistance - AAMA 501.1

Structural test at 50% and 100% of inward design pressure (or) Structural

performance @ 50% and 100% inward design wind pressure as per ASTM E 330. Structural test at 50% and 100% of outward design pressure (or) Structural

performance @ 50% and 100% outward design wind pressure as per ASTM E 330.

Air infiltration – Air leakage test only after 100% of inward and outward design

pressure test as per ASTM E 283. Water infiltration under static pressure (or) static water resistance only after 100%

of inward and outward design pressure test as per ASTM E 331. Water infiltration under dynamic pressure (or) dynamic water Resistance only after

100% of inward and outward design pressure test – AAMA 501.1 Seismic rack test – two directions Design pressure at design movement (or)

Seismic movement @ design displacement at two directions (Drift by 8 mm) as per AAMA 501-47.

Structural test at 150% of inward design pressure as proof load (or) Structural

performance @ 1.5 x Design wind pressure at two directions – ASTM E 330. Structural test at 150% of outward design pressure as proof load (or) Structural

performance @ 1.5 x Design wind pressure at two directions – ASTM E 330.

Test to failure – increase structural outward design load to 200% of design load as maximum for Structural performance @ 200% Design wind pressure or as failure status.

Note: To determine the drift causing glass fall out (i.e fall out) – Refer AAMA 501.6-01

Unless specified in the Bill of Materials or elsewhere, Design wind pressure for the mock-up shall be considered as per IS 875. Part 1, 3 & 5 or as specified in the Bills of quantities whichever is maximum and lateral force shall be as per IS 1893 latest code.

Air infiltration test shall conform to ASTM E 283. Differential static test pressure shall be 300 Pascal. Chamber leakage shall be accurately determined, not estimated. Air leakage of test specimen shall not exceed 1.098 cum/Hr.Sqm on fixed and 2.784 cum/hr.m of crack length of vent on the open able window.




The occurrence of condensation during water infiltration tests is acceptable. Other water leakage is acceptable only if all of the following conditions are satisfied:

The water is contained and drained to the exterior. There is no wetting of surface that would be visible to building occupants. There would be no staining or other damage to any part of the completed

building or its furnishings. This definition of water leakage shall govern over other definitions that may appear in referenced documents. State criteria of temperature and humidity.

Where the test sequence or test failures requires successive water infiltration tests, the only means used to drain water form internal cavities shall be gravity drainage through the weep system (pressure equalization system) for a minimum of 10 minutes. Air pressure, removal of parts or other means of draining water shall not be used.

Static water infiltration test shall conform to AAMA 501.1, except as otherwise specified herein. Differential test pressure shall be 500 Pascal. (1.92” H2O). There shall be no unacceptable water leakage as defined herein.

Dynamic water infiltration test shall conform to AAMA 501.1, except as otherwise specified herein. Differential test pressure shall be 500 Pa (1.92” H20). There shall be no unacceptable water leakage as defined herein.

Structural test shall conform to ASTM E 330. Deflection gauges shall be set to zero prior to each application of pressure at 50% and 100% of design pressures.

Deflection gauge readings shall be recorded after each application of pressure at 50% and 100%. Deflection measurements are not required for the 150% design pressure.

Structural loads (ASTM E 330-70) held for ten seconds each as follows.

50% of positive pressure - design load (To remove the slack). 100% of positive pressure - design load. 50% negative pressure - design load (To remove the slack). 100% of negative pressure - design load.

Typical deflections at the above loads will be measured with micrometer dial

indicators. Allowable deflections of metal framing members at design load are limited to 1/175 of the span or 19 mm max. whichever less is.

Supplementary loads (ASTM E 330-70) if any held for ten seconds as follows:

50% Positive design pressure (to remove slack) 150% Positive Design Pressure (1.5 x design load) 50% Suction Design Load (to remove slack) 150% Suction Design Load (1.5 design load)

Deflections are not normally measured for supplementary load conditions specified above.

No failures, in glass breakage nor permanent set in Aluminium Composite panel

in excess of 1/1000 allowed.

Perform test of each operable unit to five cycles of opening, closing and locking at the neither stage prior to testing, after air leakage test, after static and




dynamic test, at every stage, after completion of every stage of structural performance test confirming to respective ASTM standards.

Perform concentrated load test on track tie back if directed as follows:

Apply 300 kgf outward for at least 10 seconds. Apply 125 kgf side loads in either direction for at least ten seconds. There shall be no failure or gross permanent distortion of the track / tieback or

any part of the exterior wall.

Off site proto type test sequence specified above shall be carried out on prior approval of the Employer/PMC/Architect as per the item specified in the Schedule of quantities on prior approval of Employer / PMC / Architect. Off site proto type test drawings and methodology for testing shall be submitted to the Employer / PMC / Architect for review and approval.

A successful bidder shall arrange a Off site proto type test for one Typical Module covering the minimum of 3 panels and for 2 floors as proposed by the Employer / PMC / Architect at the approved independent accredited laboratory and conduct the test with in the quoted rate of the respective item of Schedule of quantities & ensure that the system includes Glass, open able vent & Aluminum composite panel and all other relevant materials including special architectural features if any & the test shall comply the set out criteria.

Credentials of the Laboratory shall be produced for review and approval of Employer / PMC / Architect prior to fixing the Laboratory for testing. Conduct Off site proto type test at an approved laboratory including necessary arrangements to conduct the test in the presence of the Employer / PMC / Architect‟s representative.

Quoted rate under respective item of Schedule of quantities shall include for making necessary arrangements and facility to attend / witness the test by the representatives of Client, PMC and Architect (One representative from each as minimum).

If off site proto type test fails, correct the defects revealed till the satisfaction of the performance data as setout in the Technical Specification.

Provide a Test report for the tested system in an acceptable format in a stamped paper prior to commencement of the ordering and procurement of the Materials.

Unless directed in the Particular specifications or the Employer disowning for carrying out off-site proto type test, the previous off-site proto type test data of the similar nature of the system/work will be recorded in the project documents as a substitution, provided the successful Bidder or specialized External Facade fabricator has tested the same or similar system, to standards equal to, or exceeding, those specified, the test date with drawings.

In this case of previous off site proto type test data is recorded as substitute, the successful Bidder or specialized External facade fabricator should be carried out the test at an approved laboratory with the same or similar system, to standards equal to, or exceeding, those specified above, in the presence of the Employer/PMC/Architect representative.

B. Field test on actual building – Hose Test:




Hose test for water leakage shall be carried out conforming to AAMA 501.2. There shall be no water leakage. Provide a Test report for the tested system for review and record.

Begin testing as early as possible during erection so that approved corrections can be incorporated into the remaining work. Correct defects revealed by tests. Retest corrected work to determine effectiveness of remedial measures.

Provide power scaffolding, hose, water supply and manpower to perform at least two successful tests at the specified four different locations. The test areas shall be as selected by Employer / PMC / Architect.

Employer / PMC / Architect will select typical areas to be tested, each equivalent or not less than to three bays wide and two Stories high and at minimum 4 locations.

Corrective measure shall meet standards of quality, represented by successfully tested mock-ups, filed tests and are subject to Employer / PMC / Architect.

If site test fails, correct the defects revealed till the satisfaction of the performance data as setout in the Technical Specification. Test sealants in place for adhesion, using methods recommended by sealant manufacturer. Promptly replace any sealant that does not adhere or fails to cure.

C. Manufacturers tests of sealants.

Provide to sealant manufacturer samples of all relevant substrates, including finished aluminium, coated glass, and gaskets, setting blocks and brackets. Label and identify samples for this project.

Sealant manufacturer shall perform tests to verify adhesion, staining and chemical compatibility. Use sealants and substrates only in combinations for which favorable addition and compatibility results have been obtained.

Separate for record only, sealant manufacturers written test reports, and recommendations regarding cleaning and priming.

Specific Test for sealants as per sealant manufactures recommendation:

Test results confirming compatibility and adhesion are mandatory for all concealed and exposed sealant materials used in the Structural Glazing panel / Window systems.

All testing shall be either complete or in progress prior to the initiation of

full size mock-up testing. In the event sealant testing has not been completed prior to the initiation

of specimens for mock-up testing such mock-up testing may precede contingent on the full battery of preliminary adhesion test results, except that no final fabrication or installation will be permitted until all sealant testing is complete.

Schedule sufficient time for testing and analysis of results to prevent delay in the

progress of the work. Fabricator shall consult with sealant manufacturer regarding timing.

Investigate materials that fail compatibility and adhesion testing and obtain

sealant manufacturer‟s written recommendations for corrective measure, including use of primer, cleaners, cleaning measures, curing time, temperature




limitations (surface and air), humidity conditions, moisture content of substrate, etc.

Definitions:

Compatibility: The capability of the sealant materials and substrates to be

placed in direct contact with each other and maintain their required physical, chemical and visual qualities with the absence of softening, staining, oil exudation, discoloration or other detrimental, deleterious or degradative effects caused by chemical interactions.

Adhesion: The mechanical or chemical ability of the sealant materials

and substrates to adhere or bond together at their interface.

Staining: Aesthetically unacceptable visual effects caused by sealant materials onto the surrounding surfaces to which the sealants are adhered.

Specimen Sizes and Shapes: As required by the manufacturers testing

laboratory for the tests listed, unless specified. Adhesion in Peel Testing Method: Comply with ASTM C794, modified to include

project specific substrates and to report cohesive failure mode. All specimens shall be tested, primed and unprimed and be subjected to water immersion. Seven days immersion is required for Structural Glazing panel/window Sealants, and one-day immersion is required for weather seals.

Compatibility Testing: This test method describes an accelerated laboratory

procedure to determine if the proposed sealant materials and substrates are chemically compatible. Comply with ASTM C1087 modified as appropriate for the project. UV light exposure should be from UVA 340 bulbs.

Stain Testing: This test method describes an accelerated laboratory procedure

to predict the migration of plasticizers from the sealant into porous substrates such as granite, marble, sandstone, and masonry. Comply with ASTM C1248 modified to test in heat exposure for 14 days at 70 Deg C after 21 days of room temperature sealant cure. Compress the sealant 50% regardless of the rated movement capability. Room Temperature controls and QUV samples are not required.

Record and submit: Any colour change of substrate or sealant, bubbles, or

sealant softening as appropriate for approval.

D. Pre Construction Field testing on sealants:

Prior to installation of field applied sealants, field-test their adhesion to joint substrates as follows:

Conduct field tests for each exposed exterior wall sealant and substrate.

Sealant application and tests shall take place with Employer/PMC/Architect, Sealant installer and sealant manufacturer‟s representative present.

Test joint sealants by hand pull method using the procedure described below:

Install sealant in 1500mm joint lengths using the same materials and methods for joint preparation and sealant installation in accordance with manufacturer‟s final laboratory testing recommendations. Allow sealants to cure a minimum of seven days.




With a knife, completely cut through the sealant bead at 90 degrees perpendicular to the direction of the joint. Make 2 cuts on either side of the joint as close to the substrate as possible, without damaging the substrate, to an approximate length of 75mm.

Use fingers to grasp 75mm piece of sealant, pull firmly down at a 180 Degree

angle parallel to the joint. Pull sealant out of joint to the distance recommended by sealant manufacturer for testing adhesion. Record the result ie. Pass or fail. Repair joint as recommended by sealant manufacturer.

Provide & submit written summary of each test, whether it was performed in the Laboratory, shop or site. This shall include all adhesion, compatibility and deglazing tests.

11.0 SUBMITTALS

A. Shop Drawings:

Prepare and submit Shop Drawings for all the items covered in the entire external façade system to PMC/Architect‟s for Review, including at project proposal stage.

Prepare Shop Drawings incorporating all allowances for construction and fabrication tolerances and in line with the project proposal drawings and details prior to preparation of final shop drawing for execution.

Submit preliminary schematic shop drawings along with Bid to understand the proposal of the system. Drawings shall show all major Structural Glazing Panel/window System components. No Tender will be considered without preliminary Drawings.

Employer/PMC/Architect‟s review will be conformance to the design concept and for the general arrangement only. And such review shall not relieve the contractor of any responsibilities as stated herein or any other applicable items herein or any other applicable items herein specified.

Submit shop drawings for all work of this section, based on approved project proposal stage system details for review and approval including shop drawings for mock-up test along with Methodology of Off site proto type test and Credentials of the independent Laboratory for testing and review and approval.

Shop drawing should include the following, but not limited to :

Show joinery techniques. Provisions for horizontal and vertical expansion. Glass and Metal thickness, framing and anchor member profiles. Identify all materials, including metal alloys, glass types, and fasteners and glazing

materials. Identify all shop and field sealants by product name and locate on drawings. Show relative layout of all adjacent walls, beams, columns, and slabs, with all

dimensions to each other and grid lines. Dimension position of glass edge relative to metal daylight. Anchorage details to the building structure and coping details at the parapet are

also to be submitted.

Submit die drawings for all gaskets, weather strips and Aluminium extrusions for record only, not for review.




Shop Drawings shall be signed and sealed by an Independent Qualified Consultant with specific experience in Structural Glazing work construction & design and submit the same for review and approval of PMC / Architect.

B. Structural Calculations:

Submit for review structural computations, of all the critical elements that constitute the Structural Glazing panel/window elements, include mock-up Test proposal. Comply with current design rules of the relevant aluminum code. Include analysis for wind, dead loads, and if appropriate seismic loads on framing members and anchors.

Show section property computations for framing members and full size die drawings.

Existing test reports shall not be an acceptable substitute for computations. In no case shall glass be considered as a lateral brace for the framing members.

Submit structural calculations for the structural silicone joint size as required. Aluminium profiles, silicone gaskets and glass bite must accommodate the silicone joint size required.

Submit structural calculations for the glass stiffeners required for spider / point fixed glazing.

Calculations shall be signed and sealed by a registered independent Structural Engineer experienced in the field of Structural Glazing/Structural Glazing Window design and submit the same for review and approval of PMC / Architect.

C. Submittal Procedure:

Submit preliminary shop drawings and shop drawing at project proposal stage with bid by the successful bidder to Employer/PMC/Architect review.

Incorporate Employer/PMC/Architect Review comments related to the preliminary shop drawings including the comments if any based on the Off site proto type test report.

After receiving Employer/PMC/Architect‟s approvals, submit drawings and calculations to the City Council for approval if required.

Pay appropriate statutory fees to the city and secure relevant permits.

Return one stamped copy from the statutory bodies to Employer/PMC/Architect‟s for the record.

Submit glass Analysis for record, only glass manufacturer‟s wind pressure analysis and thermal analysis showing that the specified maximum deflections and probabilities of breakage are not exceeded.

Submit Suitability for Structural Silicone Glazing for record, only glass manufacturer‟s written statement that any insulated glass, reflective glass and spandrel glass is supported by structural silicone is suitable for such application.

Submit Structural Silicone Substrate Tests for review the results of the structural silicone substrate tests as specified above in relevant article.

Submit Silicone Adhesive Tests for records, only sealant manufacturer‟s test report for weather seal silicone adhesive to all relevant substrate.




Test must include a seven-day water immersion after which silicone must have excellent adhesion to substrates. Report the results on adhesion strength in terms of shear stress and tensile stress. Test samples shall approximate sealant joint sizes and configurations intended for production materials.

Submit for the record, the laminated sandwiched composite panel (Aluminium composite panel) Plain and Corrugated supplier‟s analysis of the stresses in the panels when subjected to lateral pressures.

Submit a letter of certification from the sealant manufacturer stating that the sealant has been tested for adhesion and compatibility on production samples of metals, glass, and other glazing components, and that all sealant details and application procedures shown on the reviewed Shop Drawings are acceptable for use. If required specifically the following submittals shall be provided by the contractor.

Provide and review of shop drawings noting support required, tolerances, materials

used, placement of setting blocks, thermal performance and specification on flatness from the Insulated glazing manufacturer. See Glass & Glazing. Use no acid cure silicones on or near Insulating Glass Units.

Sealant Manufacturer review of the Mockup Drawings prior to the mockup. Test results for all jobs specific concealed and exposed sealant conditions

confirming compatibility and adhesion are mandatory for all materials prior to mock-up and testing. Preliminary results in advance of final reports will be acceptable contingent on adhesive values tested and reported equal to or in excess of the minimums specified.

Complete instructions for handling, storage, priming, installation, curing and

protection of each type of sealant, joint filler and accessory. Manufacturer‟s Data sheets, clearly indicating shelf life of sealant to be supplied. Manufacturer review of the final drawings after mockup, clearly indicating that each

product to be furnished complies with this specification, is recommended for the application shown, and is compatible with each other material in the joint system.

Quality assurance sample logs for the silicone Structural Glazing panel/Window

system before fabrication. Submit weekly Quality Assurance Documentation on all Structural Glazing panel / Window production.

Chart of Required Submittals pertain to sealant :

Completion Pre

mockup Post

mockup During

fabrication

Site survey and report X

Sealant Manufacturer Print Review X

Sealant Material Data Sheets X

Manufacturers Instructions X

Adhesion Testing Report X

Compatibility Testing Report X

Final Shop Drawing Review X

Off site proto type Test Report X




Completion Pre

mockup Post

mockup During

fabrication

Off site proto type Deglaze Report X

QA Sample Logs X

Pre-construction Field Test X

Shop QA Logs X

Deglaze Tests X

Field Adhesion Tests X

Field Tests Report on the System X

System Guarantee X

Anodizing Performance Warranty X

Glass & ACP Performance Warranty X

Insulated Glass Warranty X

Gasket Properties Warranty X

Sealant Performance Warranty X

Deglazing reports on deglazing of structural silicone on Structural Glazing panel/Window frames.

Deglaze using the following schedule for fabrication.

a. A full report on a mock up deglaze

b. 1 in the first 10 of production 1 in the next 40 of production 1 in the next 50 of production 1 in the next 100 thereafter (or) 1 at every 25 panel glazed irrespective of total quantum of panels.

Field Adhesion testing summary of results and location and Manufacturers

warranty at job completion. 12.0 SAMPLES:

Submit for review three (3) sets of labeled samples of each required type and colour of metal finish, on 300mm long sections of aluminium extrusion shapes. Samples must show extremes of colour and texture variation. Architect will review samples for colour and texture only. Compliance with other requirements is the responsibility of the Contractor. Colour and texture range of production material shall match approved samples.

Submit 300 mm square labeled samples of each type of glass to Architect for review. Reflective glass samples shall show extremes of colour range.

Submit for review, 3 sets of sample sealant backers, anchor components, anchor assemblies and epoxies.

Submit for approval, current (within six months of submittal date) test reports by independent laboratories for granite properties and anchors as specified in relevant




section. Submit written certification that samples tested are representative of production material. Reports will be reviewed for completeness and clarity only. Accuracy of report is the exclusive responsibility of the Contractor.

13.0 PRODUCT HANDLING

Package and store materials in a manner that will prevent surface damage or contamination, distortion, breakage or structural weakening.

All composite aluminum panels shall be packaged vertically, face to face or back to back, with adequate protection to prevent scratching.

The factory applied protective peel – off foil shall only be removed after the panels have been installed on site.

Replace any material damaged during manufacture, shipping, storage, or erection.

Protect materials in place from contamination and damage.

Protect factory-applied finishes from staining and scratches.

Field cutting of anodized / powder coated components shall not be permitted.

Deliver Sealants to project site in manufacturer‟s original unopened containers, with manufacturer‟s name, product name, and color fully indicated thereon. Store the sealants in accordance with manufacturer‟s instructions. Counterfeit products found on site will be required to be removed and proper product reinstalled at the expense of the applicator/fabricator. Any damage caused by counterfeit products will be repaired at the expense of the applicator/fabricator, without causing delay to the project. This includes replacement of stained substrates.

14.0 FABRICATION:

Competent workmen who are thoroughly skilled in their trade shall do work. Assemblies shall be neat and free of defects that impairs strength, function or appearance.

The work shall be accomplished in compliance with the specified criteria without buckling, opening or joints, undue stress on fasteners, sealants and gaskets, opening of welds, cracking of glass, leakage, noises and other harmful effects. As far as practicable, fitting and assembly of the work shall be done in the factory.

All exposed work shall be carefully matched to produce continuity of line and design. All joints in exposed metal work, unless otherwise shown or specified, shall be accurately fitted and rigidly secured with joint sizes conforming to industry standards.

Except where otherwise shown, specified or directed the method of assembly and joining shall be the Contractor‟s option provided the results are satisfactory. The manufacturer‟s proven methods that will produce the required standards of workmanship shall be used subject to approval.

Fabricate and fasten metal work so that the work will not be distorted nor the fasteners overstressed from the expansion and contraction of the metal.

All welding shall be in accordance with the appropriate recommendations of the American Welding society and shall be done with electrodes and/or by methods recommended by the manufacturer of the alloys being welded. All welds behind finished surfaces shall be done as to minimize distortion and/or discoloration on the




finished side. All weld spatter and welding oxides on finished surfaces shall be removed by decaling and/or grinding.

Unless shown or specified, all weld beads or exposed surfaces shall be ground and finished to match and blend with finish on adjacent parent metal. Grinding and polishing of nonferrous metal shall be done only with clean wheels and compounds free from iron and iron compounds. No soldering and/or brazing shall be allowed.

Conceal fasteners where visible in the finished work.

Fabricate aluminum components before finishing. Components cut in the field will not be acceptable.

All Composite aluminum panels shall be factory fabricated and assembled in compliance with the manufacturer‟s Data sheets. All panels shall be cut and routed using equipment and tools recommended and approved by the panel manufacturer. After folding into cassettes, an extruded aluminium profile shall be fixed to the minimum 25 mm deep return bend using 5 mm blind rivets. The aluminium flat of size 25 x 2mm shall be provided as a stiffener to ACP in the corner bends to the total height of the panel.

15.0 INSPECTION

All shop and field materials and workmanship shall be subject to review by Employer/PMC/Architect at all times. Such reviews shall not relieve the Contractor from the obligation to provide materials conforming to all requirements of the Contractor Documents, and matching approved samples. The Contractor shall promptly correct any deficiencies reported and carry out his own control measurements for all materials, whether reviewed or not.

Verify that surfaces and conditions are suitable to receive the work of this Section at site, and that conditions will not adversely affect the installation and performance of the installed work.

Correct all unsatisfactory conditions prior to beginning erection of specified work. 16.0 ERECTION

Erect Structural Glazing panel / Window and aluminium drain system in accordance with the approved Shop Drawings.

Provide labor, material, booms, accessories, and supervision necessary to erect

the complete material.

Coordinate erection with the requirements of the hoist man lift, including tie back and kicker connections tot he floors, and door openings at the various floors.

Do not install components, which are defective in any way, including warped,

bowed, dented, abraded, and broken members and glass with edge or surface damage. Remove and replace all damaged components to PMC/Architect‟s satisfaction.

Set walls plum, square and level and fasten securely in correct vertical and horizontal alignment. Seal joints within wall and between adjacent constructions.




Install components level, plum, true to line, and with uniform joints and reveal. Attach to structure with non-staining and non-corrosive anchors, fasteners, spacers, and fillers as required.

Do not cut, trim or weld components during erection in any manner, which would damage the finish, decrease strength, or result in a visual imperfection, or failure of such components. Return components that require alteration to the shop for re-fabrication, or for the replacement with new parts or components.

Tolerances.

Tolerances for building frame and other work are specified in other Sections.

Make provisions for these tolerances, including a 25mm concrete slab tolerance.

All parts of the work when completed shall be within the following tolerances:

Deviation from plumb, level or dimensioned angle shall not exceed 3 mm

per 3.2m of length of any member, or 5mm in any total run in any line. Deviation from theoretical position in plan or elevation, including deviation

from plum, level or dimensioned angle, shall not exceed 10 mm total at any location. Change in deviation shall not exceed 3mm for any 3.2 m in any direction.

Maximum offset from true alignment between two consecutive members

placed end to end shall not exceed 1.5mm.

Maximum offset between glass framing members at corners of glazing pocket shall not exceed 1mm.

Provide accurate bench marks for use in wall erection at all floors. Promptly

correct any errors or inconsistencies.

Assembly and Anchorage:

Anchor component parts securely in place by bolting, welding or other permanent, mechanical attachment system, which will comply with performance requirements and permit movements, which are intended or necessary. Install slip pads between moving parts.

Provide a separator at contact surface of dissimilar material wherever there is a

possibility of corrosive or electrolytic action.

Remove weld slag and apply prime paint over welds. Also paint exposed portions of inserts. Touch up shop applied paint that is damaged by welding or other causes.

Glazing:

Preparation: Clean all surfaces, which will abut glass immediately prior to glazing. Remove all dirt, oil and other bond reducing film. Use cleaning material only as recommended by the Structural Glazing panel/ Window contractor.

All glass shall be new. Mock-up glass shall not be used on the building. Glass shall be of the specified types and quality, with seamed edges and corners. Inspect all lights of glass before installation. Do not install defective glass.

Before setting glass, inspect frame for proper dimensions and square. Adjust

frame and/or glass size as required to meet specified requirements.




Unless otherwise specified, comply with FGMA Glazing Manual. Provide a

minimum nominal glass bite of 12mm. Where glass bite will be reduced by frame thermal movement, increase nominal glass bite to provide 12mm bite when splice joints are fully opened. For Structural Glazing Panel/Window, glass bite shall be adequate to provide the surface contact area required for the structural silicone and silicone gaskets.

Unify the appearance of each series of lights by setting each piece to match

others as closely as possible. Inspect each light, and set with pattern, draw, and bow oriented in the same direction.

Thoroughly clean glazing pocket before setting glass. Solvents shall be

compatible with aluminium, glass and glazing materials. Place setting blocks at quarter points. Place side blocks in the upper half of each jamb light. Side blocks shall be positively retained in position.

Remove and replace stops and apply sealants as required for a complete glass

installation. Details of installation shall permit replacement of glass after the construction period.

Defer glazing of openings which is obstructed during construction. Glaze such

openings when obstructions are removed. Replace any glass, which breaks or sustains edge damage, surface damage or damage to reflective coating as defined above.

Sealant Application:

Apply sealant materials in accordance with sealant manufacturer‟s recommendations.

Apply sealant using a continuous bead of sealant. Apply a continuous sealant bead between flashing and adjacent construction.

Before application of sealant, examine the substrates, adjoining construction

and the conditions under which the work is to be installed. Do not proceed with the work until unsatisfactory conditions have been corrected. In no instance shall the installer install sealant in conditions which conflict with this specification without approval.

Clean bonding joint surfaces to remove deleterious substances, this might

interfere with bond or otherwise impair the work.

Do not apply electrometric sealants to joint surfaces previously painted or treated with sealer, curing compound, or other coatings, unless a laboratory adhesion and peel test in accordance with ASTM C 920 and ASTM C794 has been performed and successfully demonstrated that bond will be durable.

Unless shown or specified and documented, Install materials in accordance with

the manufacturer‟s printed instructions. Confine sealants and primers to joints using masking tapes or other precautions

where required to prevent contact of sealant or primer with adjoining surfaces which otherwise would be permanently stained or damaged by such contact or by cleaning methods required to remove sealant smears. Remove tape immediately after tooling without disturbing sealant.




Primers: Prime all substrates recommended by the manufacturer based upon adhesion testing. Comply with the instructions of the sealant manufacturer. Avoid migration of primer onto adjoining surfaces and remove any spillage promptly. Unless specifically recommended by the manufacturer as noted in the above submittals prime before installation of backer materials.

Where joint filler is used as backup for sealant, install filler continuously without

voids or interruptions to depth and shape specified by sealant manufacturer for proper application and performance of products. Trim for tight fit around obstructions or elements penetrating the joint.

Install bond breaker in joints as shown and wherever recommended by the

sealant manufacturer to prevent bond of the sealant to surfaces and where such bond might impair the performance of the sealant. Do not puncture surface or skin of expanded joint filler backer rods.

Apply joint fillers accurately according to the joint profile shown in the drawings

after joint cleaning and priming. Provide watertight and airtight corners and joints in a manner recommended by the manufacturer.

Apply sealants in continuous beads filling joint from the bottom without

openings, voids or air pockets so as to provide a watertight and airtight seal for the entire joint length. Apply sealants in concealed bedding joints accurately so that excess sealant will not exude from the joint.

Apply sealants in the depth shown or, if none is shown, apply in accordance

with the manufacturer‟s recommendations. Apply electrometric sealants, in field joints not subject to traffic or other abrasion, to a depth equal to 50% of the joint width, but not less than 6mm and not more than 12mm.

Immediately after sealant application and prior to time skinning or curing begins, tool sealants to form smooth, uniform beads of configuration indicated, to eliminate air pockets and to ensure contact and adhesion of sealant with sides of joint. Remove excess sealant from surfaces adjacent to joint. Do not use tooling agents which discolor sealants or adjacent surfaces or are not approved by sealant manufacturer. Tool exposed surfaces of sealants to the profile shown or if none is shown, tool slightly concave to match the configuration as in ASTM C1193.

Provide a slight slope on horizontal joints where horizontal and vertical surfaces

meet.

Remove excess sealant promptly as the work progresses and clean the adjoining surfaces as may be necessary to eliminate any evidence of spillage.

Do not proceed with installation of field sealants during inclement weather. Do

not proceed with installation of elastomeric sealants when extreme temperatures or heavy wind loads are forecast during the period required for initial or nominal cure of elastomeric sealants. Whenever possible, schedule the installation and cure of elastomeric sealants during periods of mean temperatures (nominal joint width shown) so that subsequent stresses upon the cured sealants will be minimized. Install field sealants in accordance with manufacturer recommendation to reduce sealant wrinkling from movement during cure. Do not install sealants into joint widths that are less than specified without approval of the Employer/PMC/Architect.

17.0 PROTECTION




Take all necessary means to prevent any damage (scratches, dents, nicked edges etc.) to components during handling and erection. Replace components beyond acceptable field repair at no additional cost to the Employer/PMC/Architect.

Protect glass from breakage immediately upon installation by attachment of crossed streamers to framing held away from the glass. Do not apply markers of any kind to glass surfaces. Remove and replace glass which is broken, chipped, cracked, abraded or damaged in any manner as a result of construction activities, natural causes, accidents or vandalism. Replace with new materials at no additional cost to the Employer/PMC/Architect.

Maintain glass in a clean condition at all times, including during construction, to prevent glass damage from corrosive action from the elements, and contributing side-effects (by wash-off) to other components and other work.

Cure sealants in accordance with the manufacturer‟s instructions, to obtain maximum bond to surfaces, cohesive strength and durability at the earliest possible date.

Protect sealant during the remainder of the construction period, so that they will not be subjected to damage before the time of acceptance by the Employer/PMC/Architect. Do not proceed with a mockup until representative size sealant joints are fabricated and documented as cured.

18.0 CLEANING

Clean surfaces as required to remove corrosive substances. At the conclusion of construction, clean all surfaces to the satisfaction of PMC/Architect.

Provide written verification those cleaning agents are compatible with aluminium, glass, glazing materials and sealants.

Periodically removes from the site debris, excess materials and unused tools and equipment resulting from this work. At the conclusion of construction, leave the premises in a clean condition acceptable to PMC/Architect. Surfaces as required to remove corrosive substances.

Upon Completion of construction and prior to taking over the work by the Employer, it is the responsible of the Successful bidder to clean all surfaces to the satisfaction of Employer/PMC /Architect.

19.0 MAINTENANCE REQUIREMENTS:

General: Provide design of the building envelope systems to allow for all BMU / Cherry picker load which may occur.

Retaining pins for the BMU are to be provided by the BMU contractor to the Glazing assembly factory and are to be fixed to the glazing system by the Façade contractor.

Damage: Horizontal or near horizontal surfaces, which form part of the building envelope system such as copings, beam encasements, ledges, or the like, shall be designed to carry human live loads from maintenance personal.

Self cleaning: the design of all components for the contracts works shall be such that their configuration shall facilitate the self cleaning of the various systems. Inclined drainage surfaces and flashings properly designed drip grooves and self cleaning joint design are examples of this requirement.




Panel replacement method: the Façade contractor shall design and install the building envelop systems to allow for the future replacement of any individual panel. The Façade contractor shall submit details and procedures for replacing individual damaged items as part of the shop drawings.

20.0 SPARES:

The contractor shall supply an adequate number of spare glass panel‟s specification wise to be held in storage by the Employer as spares in the event of accidental breakage or some other failures that might occur in the future at the mutually agreed quoted rates.

It is the contractor's responsibility to advise the Employer as to the number of spares required for this project. In general, the attic stock of the total glass shall be considered as per the specification given in the Schedule of quantities.

Number of spares required shall be decided by the Employer, based on the successful bidder proposal on the sizes and numbers, tentatively attic stock will be 2% (Two percent) of total glass area covering all the different type and sizes of panel used in the project at the agreed Quoted rate.

21.0 MODE OF MEASUREMENT:

Unless noted otherwise in the Description matrix and Schedule of quantities, items will be measured generally in accordance with IS 1200.

SECTION – 2 - PARTICULAR SPECIFICATION

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General Note: This Particular specification shall be read along with Schedule of quantities while quoting the rate for the respective items. The quoted rate under this schedule shall be deemed to have considered Technical specification.

22.01 1.01 to 1.04,

5.00 & 14.00

Unitized Glazing

Unitized Structural Glazing System

Scope: Designing the Unitized Structural Glazing System with open Groove joint as per design intent, preparation of shop drawings for approval, supply, fabricate, erect as per approved shop drawings at all floor levels and all floor heights including conducting field test as per the test criteria set out in the Particular specification (Methodology should be got approved by the Employer/PMC/Architect). Design the framing system (ie. Male & Female frame) to support Vision panels, Spandrel panels either with Glass or Laminated sandwiched composite panel (ACP), openable window panels on a continuous framing supported




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between floors. Also design the split framing unitized glazing system in case of Strip or Punched windows with vision panel proposed with either Insulated / Monolithic Glass. Provision shall be made in the system to fix all operable vent hardwares including stay arm and louver brackets etc. Groove width in the system both in horizontal and vertical shall not be more than 16 mm. Glazing of panel shall be done only at factory at the controlled atmosphere. Vertical in-situ glazing shall not be carried out during construction / erection stage. I. DESIGN: a. Design: Design pre-assembled aluminium Unitized Structurally glazed Panel / strip / punched window system to any shape and profile to satisfy the structural design criteria specified in the technical specification (Test pressure shall be 1.5 times of the design wind pressure) conforming to IS 875 - Part-3 and Lateral forces as per IS 1893 (Latest Revision) and fixed at horizontally / vertically / sloped / curved position etc as shown in the drawing by using Aluminium extrusion, Glass, Spacer tape, Gasket and Sealant as specified. System shall be designed with Air Pressure equalization chamber and concealed continuous gutter vertically and horizontally at all levels as self drainage barrier to achieve water tightness besides providing EPDM Gaskets on the concealed part and Silicon synthetic rubber on exposed surface as air & water barrier. b. System: System shall be designed to withstand loading parameters and design wind pressure specified above with self-bearing modular elements supported between floors, EPDM Gaskets to prevent the system from Air & water penetration , double adhesive spacer tape, backer rod, sealant, supporting brackets (Resistance to design wind pressure), Separator Gaskets for Bi-Metallic Corrosion, Pressure equalization chamber in the system, built-in continuous internal drainage gutter for collection and facility at lowest floor level to drain out penetrated water, in built adjustability to accommodate thermal expansion, thermal movement and movement due to any other forces. System shall be designed with open groove joint system and the aluminium member and Sealant shall not be visible on the external surface except colour anodized aluminium holder to the required width and thickness as per design at bottom of panel as Dead load support to the Glass panel. System shall be designed in such a way that the secondary sealant of Insulated Glazing unit is covered with silicon gaskets, as form part of the system. System design shall also be considered any load transferring to the Mullion / transom due to any projection on the façade including louvers, brackets etc, c. Movement: System shall be designed to accommodate movement due to any force including the movement resulting from the exterior skin temperature ranging from 15 to 85 deg Celsius, Interior skin temperature ranging from 15 to 30 deg Celsius and also to accommodate the horizontal building movement of 10 mm per panel & vertical movement of 20 mm between floors on the aluminium framing system with support brackets, glass, gaskets and fastening devices. System shall be designed to accommodate the size and shape of the glass panels as per the approved drawings including approved modifications as may be required during execution as well as all other incidental forces and stresses likely to be experienced under service conditions, i.e. Lateral force, Dead weight and Thermal expansion due to building movement both vertical & horizontal etc.




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II. MATERIALS: a. Frames: Providing and fixing pre-assembled aluminium frame work designed to with stand design wind pressure and movements as specified as continuous framing system for Structurally glazed panel and split framing system for structurally glazed punched windows. Horizontals (Transom) shall be made out of specially designed extruded sections matching to the Mullion depth in such a way the Mullion and sill / head Transom flush on inside of the facade. Intermediate transoms shall be provided keeping 2 to 3mm recessed from the inner face of the mullion. Joints between mullion and transom shall be filled with weather sealant on the inside. All transoms shall have uniform in depth on the inner face of the system. Fabricated Mullion and Transom shall be fixed at all levels and heights as per approved shop drawing into masonry wall / RCC surface with supporting system consisting of Brackets / Clamps, fastening straps, nuts, bolts, rivets, washers and other fastening materials. Extruded section shall be designed to accommodate Insulated Glass (DGU) / Monolithic (Single) Glass and Aluminium composite panel as per the approved shop drawings. Extruded sections shall be 6063 T6 or 63400 (H9) grade conforming to BS 4174 or IS 8147, finished with AC25 grade Architectural quality electrolytic colour anodic coating of approved colour - IS 1868. b. Glass: Fixing the Insulated / Double Glass (IGU / DGU) - 24 mm thick (6+12+6mm) / Monolithic (single) Glass - 6 mm as per specification for both vision and spandrel panel conforming to the minimum spectral parameters as specified. Spacer for Insulated glazing unit shall be aluminium extruded profile and finished with AC 25 grade electrolytic colour anodic coating of black colour conforming to IS 1868 and filled with dry desiccant. Primary sealant shall be Poly-isobutylene (PIB) and Secondary seal shall be structural silicon sealant of DC 995 (one part) or DC 983 (two parts) of Dow corning or approved equivalent. Make and thickness of Inner pane glass shall be the same make as outer pane glass of IGU/DGU. Refer the separate item in Schedule of Quantities for the supply of Insulated / Monolithic glass. c. Gaskets: Providing and fixing weather barrier to ensure the air & water tightness at minimum 3 stages and to ensure that the system is thermally broken systems. The first barrier exposed to weather condition shall be Elastomer silicon synthetic rubber manufacture by oven process at different stages conforming to BS or equivalent IS. The properties of Elastomer silicon synthetic rubber such as hardness, tensile strength elongation compression test & ozone resistance shall be in accordance with BS 903 & BS 903A minimum hardness (shore A) of Elastomer silicon synthetic rubber shall be 65 to 75 Deg and the weather strip within the system shall be Elastomer EPDM (Ethylene Propylene Dinine Monomer) synthetic rubber and its properties like hardness, expanded density (Specific gravity) compressive set, water absorption, skin surface, cell structure, ozone resistance, low temperature includes work shall be in accordance with ASTM D – 1056 and minimum hardness ( Shore A ) shall be 61/71 Grade. In general, EPDM gaskets / silicon synthetic rubber shall be of approved make as per list of approved make given as part of the tender. Contractor shall submit the Manufacturer test certificate conforming that the properties of the Gasket supplied is meeting the specification, codes &




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standards and copy of such codes shall be produced by the Contractor for verification of Employer/PMC/Architect. Contractor shall arrange to carry out the test to check the properties of EPDM gaskets / silicon rubber on the random sample selected by Employer/PMC/Architect (Min. 3 Nos of each type to a required length) and the contractor shall make sure that the properties are meeting the codes and standards. d. Sealing: Providing and applying the structural sealant for the glazing at factory confirming to the thickness & bite of sealants as designed & determined by calculation, verified and tested by Manufacture's of sealant. Bite and thickness shall be designed to withstand 3 times of the stress caused by the design wind pressure and the Design calculation of sealant manufacturer shall be produced along with shop drawing for approval. Supplying and fixing the Double Adhesive spacer tapes for glazing the panel at factory shall be open cell polyethylene and it shall be Nortan V-2100 of Nortan Grind well make or approved equivalent. Jointing / Sealing shall be done with Non structural (weather) sealant / Non staining sealant of DC 991 HP of Dowcorning make or approved equivalent with Polyurethane baker rods of Supreme make or approved equivalent. Acetoxy sealant shall not be used for Structural Glazing application. In general, the type of sealant shall be as follows: Shop / Factory Sealants: i) Structural sealant shall be DC 795 (one part) or 995 (one part) or DC 983 (Two part) of Dow corning make or approved equivalent. ii) Non-Structural (weather) sealant shall be DC 991 HP of Dow corning make or approved equivalent. Colour - Grey or Black colour Field Sealants: i) Structural Sealant shall be DC 795 (one part) or DC 995 (one part) of Dow corning make or approved equivalent. ii) Non-Structural (weather) sealant shall be DC 991 HP of Dow corning make or approved equivalent. Colour - Grey or Black colour e. System Supports : Providing and fixing the supporting system with Brackets / Clamps including fastening straps, nuts, bolts, rivets, washers as per design requirement and as per approved shop drawing. Brackets / Clamps shall be of hot dip galvanized steel and Fastening materials shall be Non - magnetic Stainless steel 300 series - 316 grade of Hilti make or approved equivalent. Galvanizing thickness shall be in accordance with IS 2629 and 4759. Supplying and fixing Serrated plates or Serrated washer wherever required, removable Safety clips on each corner of glass as a safety measure to avoid breakage of glass corners during transit and this clip to be retained till the glass is taken for the Glazing in to the frame. Glazed panel with broken or Chipped off glass at the edges and with any scratch on the surface of the glass shall not be allowed to use in the Facade and found any such damages in the glass panel even after glazing shall be rejected and to be replaced with new one after the approval of installation methodology by Employer/PMC/Architect. f. Smoke seal: Providing and fixing Smoke seal / Fire stop using extruded aluminium channel with cap / Sheet for continuous structurally glazed framing system and in general the thickness of channel and cap shall be 2 mm and to a width as required between transom and sill finish material and it shall be 63400 (H9) grade conforming to IS 8147, finished with AC25 grade Architectural quality electrolytic colour anodic coating




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conforming to IS 1868 of approved colour. Aluminium colour anodized extruded Channel shall be supported with the help of Aluminium bracket as designed and this bracket to be fixed on the wall / RCC surface with necessary SS anchor bolt and fastener of Hilti make or approved equivalent. This channel with cap shall be provided between Sill finish Material (Civil scope)) and structural glazing member at sill level and between RCC member face and structural glazing member at soffit level / false ceiling and etc complete. All the Joints between the capping channel and any other finish material at both sill and soffit level shall be sealed with Intumeasant sealant of 3M or Hilti make. g. Flashing: In addition to the Channel specified above in item (f) above, providing and fixing flashing at all floor levels as part of the system (applicable only for continuous structural glazing portion) made to profile as shown in the approved drawings and the profile shall be made out of hot dip galvanized sheet 1.0 mm thick and galvanizing coating thickness shall be in accordance with IS 2629 & 4759 and 1.2mm thick aluminium anodized / powder coated sheet shall be considered for Exposed area of flashing. In general, the flashing shall be provided to the entire length of structural glazing portion horizontally at all floor levels and at terrace level with a overlap of 100 to 125 mm in plan and the joints shall be sealed with weather silicon sealant and with recessing anchoring system soaked and SS fastening devices in sealant of Hilti make or approved equivalent. Also, the flashing shall be provided at parapet top below the coping to drain the water during any seepage through the sealant joints with overlap of 100 to 125 mm in plan with sealant at joints to make sure that no water leakage through coping / flashing joints. h. Insulation on spandrel panel: Providing and fixing Mineral wool slab - 60 Kg/cum - confirming to EN 13501-1) and having 'K' value of 0.035 w/Mok - 50 mm thick - Thermal Rock of Rockwool India & Middle East make on the spandrel panel area i.e, behind the ACP / glass and for smoke seal at sill level. These wool should be covered with Black tissue factory pressed - 0.50 mm thick (Nominal Mass - 60 Kg/cum) to conform Non combustibility Class - fire rating to BS 476 - part 7 & IS 3808 and fixed by using Aluminium Angle / channel of required size as base and the wool shall be tied with 22 gauge G.I. wire in criss-cross manner into Aluminium angle / Channel to the structure in addition to the G.I wire the black anodized aluminium flat of 25 mm wide and 2 mm thick spaced not more than 300 mm shall be provided to hold the insulation in position and shall be covered with Anodized aluminium sheet tray of 1.2 mm thick on the back with perforated with 300 c/c and clear weather sealant around the tray but gap to be provided vertically both side at 1/3 of the height. The aluminium flat shall be fixed over aluminium tray having minimum fold 25 mm on all four sides by using 2 Nos of pop up rivet on each side with same colour of flat. Rock wool should be fixed to the main aluminium frame work between mullion & transom on each side with the gap of 25 to 30 mm from the inner surface of the glass (i.e behind the spandrel panel glass area). The measurement shall be made only between mullion & transom on each side of the inner surface of system j. Top hung Openable window Hardwares: Providing and fixing the hardwares for the shutter with heavy duty self balancing stainless steel friction hinges, corner transmission, detachable restrictor stay assembly and Multi point locking with required locking points based on the window




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Description

panel size including corner locking point with heavy duty mechanism, handle with key at centre of the transom having a ceremony. Handle / cremony shall be made out of aluminium die cast with powder coat finish - 65 microns, matching to the transom profile colour. Rate shall include the shutter frame as designed to accommodate the Hinge, stay arm and multi point lock, EPDM gaskets, fastening materials including all other necessary materials etc. Hinge shall have thermoplastic asymmetric end cap to ensure weather tight sealing at the ends. Rate shall exclude cost of Glass and main frame, but include cost of sub frame for shutter and the frame to be designed to fix all the hardwares specified like heavy duty self balancing stainless steel friction hinges of Model no SPT 26, Corner Transmission Model no 9312, corner locking point model no 9313 and restrictor stay arm assembly model no SR 8 with release key of model no R 7437 of Securestyle (UK) make or pre approved equivalent make and Multi point lock and handle / cremone size of 110 x 27mm with key of Model no 610 K of Alualpha make or pre approved equivalent make. Shutter will have a provision for hold open option and to restrict the opening not more than 200 mm and to keep the vent weather tight while closing the shutter. Gaskets shall be designed to ensure the air and water tight including noise control while the shutter is closed in position and the gasket shall be silicon synthetic rubber of required strength. Rate shall include for providing master key - 3 sets (floor wise) & Grand master key - 3 sets (building wise) for open able with necessary coding engraved on the keys etc, complete. k. Provision: System design in total shall have the provision to fix the Decorative capping / Louver and door integrating with glazing system with necessary structural supports cladded with specified materials and necessary hardwares etc complete. l. Visual mock up: Providing and fixing full scale visual mock-up with minimum 3 bays and for 2 floor height with combination of vision, spandrel, spandrel on vision area, open able window, ACP cladding, smoke seal, flashing and other special architectural features etc, to establish the actual system design prior to proceeding with full scale production of the materials involved in the system. Conduct a water test on the installed visual mock up system, (only water using hose real to the specified pressure in the technical specification) and submit the test result of the system for review. Rate shall include for any improvements required on the system based on the test result by the Glazing contractor. m. Off-Site proto type Test: Provide shop drawings and design calculation to carry out the full Scale off site proto type at an approved accredited Laboratory based on the Design Criteria set out in the Technical specification and confirming to ASTM E 330. Methodology along with shop drawing shall be submitted for the approval of Employer/PMC/Architect. Supply the test specimen to the approved laboratory and the test specimen shall be provided for minimum 3 or 4 bays including corner bay if any and for 2 floor heights with the combination of vision, spandrel and open able window with Glass/ACP and any other special features on the system as proposed to be installed and the specimen to be tested to the specified loading parameters and design wind pressure (Testing pressure shall be 1.5 times of the design wind pressure) conforming to IS 875 and the lateral displacement as specified above. Rate shall include erecting the specimen as per




S.No

Ref.


Description

approved shop drawing on the test rig to conduct the off-site proto type test. Conduct test as per design criteria set out in the Technical specification and confirming to the standards as per ASTM E 330. Necessary clearance from the Laboratory to inspect the test by the contractor and he shall arrange for the inspection of the representatives of the Employer, PMC and Architect (one representative from each) to witness the test during the test is in progress and the contractor shall include the expenses incurred for the Inspection of the team. If off-site proto type test fails, correct the defects revealed to the satisfaction of the performance data as set out in the Technical Specification with prior approval of Employer/PMC/Architect on defects rectification Methodology. Upon approval of methodology retesting shall be done at laboratory to the satisfaction of the performance data as set out in the Technical Specification with prior approval of Employer/PMC/Architect. Any charges on account of rectification of test specimen and test rig due to failure of the test shall not be paid for. Testing charges shall be paid only after the satisfactory completion of the test and submission of test report to Employer / PMC / Architect. In case this test is not performed due the reasons mutually agreed by all, the cost of test shall be deducted from the glazing item after verifying the cost test from the approved accredited testing laboratory. m. Field Test: Conduct Field test at site on the installed glazing system at minimum 4 locations with 2 revisions as per the criteria set out in the particular specification in the presence of Employer/PMC/Architect. Methodology for carrying out the test shall be submitted to Employer/PMC/Architect for approval prior to testing. Record the results and submit the report to the Employer / PMC / Architect for approval. If Field test fails, correct the defects revealed to the satisfaction of the performance data as set out in the particular Specification with the prior approval of Employer / PMC / Architect. n. General Guideline: System design in total, including Aluminium extruded frames, type & thickness of Glass pane, Aluminium sleeves at connections, inserts, EPDM Gaskets, Adhesive tapes, Sealant, Supporting system / bracket including fastening and anchoring system & Materials specified in the schedule and the system details as shown in the tender drawing are only tentative and is meant to set out a general outline of the Proprietary system. Since the Structural Glazing system in terms of Design, materials, all fixing details, methodology of execution are proprietary in nature, the onus of the design and Performance requirements, shop drawing, execution etc satisfying the design intent, particular specification and site conditions lies solely with the Contractor. o. Mode of Measurement: Length and breadth (Sqm Items) of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. Glass area including groove (ie centre to centre of groove line both horizontal and vertical) on the external surface only will be measured under respective item and paid for. Quoted rate shall be deemed to have considered the above stipulation. p. Rate. Quoted rate shall include the cost of all materials and labour




S.No

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Description

involved in all the operations as specified above, specified in the external facade system, to execute the work as per approved drawings / shop drawings including, scaffolding, infrastructure facility, tools and plants etc. necessary for execution of the respective item for all height and for all floor levels. Item measurable in sqm. Rate shall exclude cost of supply of glass, decorative capping, Insulation on spandrel, supply of hardware and sub frame for shutter for top hung window but, includes the cost of field test and visual mock up, off site proto type test, fixing of glass and supplying and fixing of ACP, fixing of window hardware & capping. Supply of glass, Decorative capping system, supply of hardware for top hung window, off site proto type test and Insulation tray on spandrel shall be measured separately and paid under respective item given in the tender.

22.02 3.00 & 4.00

Point Fixed Glazing

Frameless Glazing (Point fixed) with Glass fin and Spider/Articulated bolt system with sliding / openable doors:

Scope: Designing the Frameless glazing system with or without sliding / openable doors as per design intent and as per approved drawings, preparation of shop drawings, supply, fabricate the panel with the specified glass on the M.S support / Glass fin with custom designed brackets and articulated blots, erect the system on the erected supporting system at site made out of RCC / MS PU painted / Epoxy painted tubular structure as per approved shop drawings at all floor levels and for all heights. Designing, providing and fixing Glass fin and bracket with articulated bolt supporting system, the framing system to support laminated Glass panel to any shape & profile, smoke seal, flashing including gaskets, sealants necessary accessories, as part of the system on a continuous framing supported between floors and soffit as detailed below. Design the frameless glazing system with laminated glass panel proposed and as specified by maintaining a groove width shall not be more than 10 mm both in horizontal and vertical. Conducting the test for the materials involved in the system, field test on the erected system at site as per the test criteria set out in the specification of External Facade system. Submission of methodology for the Materials and assembly - field test supported by the copy of relevant codes & Standards and the same shall be got approved by the Employer / PMC / Architect prior to testing. Protection of the System and Materials till handing over to the Employer / PMC / Architect , removal of the unwanted materials, broken glass, Screws, bolts, nuts, Packing Materials, debris etc, regularly and keeping the premises neat and clean at all times. Coordinate the details of the façade cleaning system during the preparation of shop drawing and incorporate such details in the shop drawing submitted for approval of Employer/PMC/Architect. Maintaining the system by means of periodical inspection at site (bi-monthly) and checking the system and Materials involved in the system during Defects liability period (this will not relieve the contractor from the condition laid down in the contract under defects liability period) to ensure that the system and all materials are free from any defects during this period. Providing the Guarantee for the entire External Façade system to the specified period in an approved format supported with Back to back guarantee from the specialized Material supplier like SS Bracket, Laminated glass for fin and facade, Gasket, Sealant, Hardware etc. complete as directed by the Employer / PMC / Architect. I.DESIGN:




S.No

Ref.


Description

a. Basis: Design, supply and install frameless glazing system at all levels using custom designed SS Brackets to support the Glass fin system or M.S PU painted structure to receive the spider and the entire system shall be designed to satisfy the structural design criteria specified in the technical specification. The design shall accommodate Facade glass panel of specified thick laminated glass and its dead load. The suspended glazing system shall be of Stainless steel Articulated bolts with specially fabricated SS brackets of grade 316 and Bolts are from Dorma / Gaze make or approved equivalent make, supported on stainless steel brackets and toughened, heat soak tested Monolithic / laminated glass fin of specified thick. Glass fin shall have lateral support at every grid division and up to finished floor level. Design shall accommodate floor movement of 15 mm at the floor bottom and top level and the Glass fin shall be suspended from ceiling with the help of SS channel and the fin shall be rest on SS channel at bottom. SS Channel shall be fixed in to the structure by using SS fasteners and anchor bolts of 316 grade of Hilti or approved make. Structural sealant of Dow Corning DC 983 (grey colour) or approved make of Grey colour shall be used between the Glass fin and facade panel and between the Facade panels. Also Teflon / nylon bushes & separators to prevent bi-metallic contacts shall be provided and all in complete required performing as per specification and drawing in conjunction with Particular specifications & Schedule of quantities. Quote rate shall include all design, engineering & shop drawing approval from Employer / PMC / Architect. b. Movement: System shall be designed to accommodate movement due to any force including lateral/dynamic pressure movement, horizontal & vertical building movement panels and on the framing system with support brackets, gaskets and fastening devices. System shall be designed to accommodate the size and shape of the glass panel as per the approved drawings including approved modifications as may be required during execution as well as all other incidental forces and stresses likely to be experienced under service conditions, i.e. Lateral force, Dead weight and Thermal expansion due to building movement both vertical and horizontal etc. II. MATERIALS: a. Frames: Providing and fixing pre - assembled SS Bracket and frame work designed to with stand design wind pressure and movements as specified as continuous framing system for Point fixing the glazed panel system. Brackets shall be made out of specially designed SS sections and shall be fixed at all levels and heights as per approved shop drawing on the erected main member and supporting system erected on RCC surface at site. The supporting system shall consists of Brackets / Clamps, fastening straps, nuts, bolts, rivets, washers and other fastening materials etc. b. Facade Glass: Fixing Laminated Glass Unit as per specification conforming to the minimum spectral parameters as specified. Make of Inner pane glass shall be the same as outer pane glass of Laminated Glazing unit. Both panes of laminated glass proposed for Facade glass shall be 100% heat soak tested and provide a 100% heat soak program for fully toughened glass for the specified thickness that is consistent with the EN 14179-1standard (550°F +/- 18°F for a dwell time of two hours). Necessary certificate shall be produced for all the glasses to ensure that




S.No

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Description

all the glasses are tested. Methodology for submitting the test report shall be desired at the appropriate time by the Engineering Consultant. c. Fin Glass: Providing and fixing Monolithic / Laminated Glass Unit of specified thick the laminated glass shall having outer pane and inner pane interlayed PVB of DuPont make. Make and thickness of outer and Inner pane glass shall be the same and both the panes extra clear glass of approved make both panes of laminated glass proposed for fins shall be 100% heat soak tested and provide a 100% heat soak program for fully toughened glass for the specified thickness that is consistent with the EN 14179-1standard (550°F +/- 18°F for a dwell time of two hours). Necessary certificate shall be produced for all the glasses to ensure that all the glasses are tested. Methodology for submitting the test report shall be desired at the appropriate time by the Engineering Consultant. d. Rubber pads between brackets: Providing and Fixing Ethylene Propylene Dinine Monomer (EPDM) rubber pad as weather strip and barrier and shall have Hardness (5 second) shore A with a typical value not less than 70, ultimate tensile strength of 70 (+/- 10%) Kg/Sq.cm and ultimate elongation of 250% (+/- 10%). The rubber pad shall be of approved make as per list of approved make given as part of tender. Contractor shall submit the Manufacturer test certificate conforming that the properties of the rubber pad supplied is meeting the specification, codes & standards and copy of such codes shall be produced by the Contractor for verification of Employer/PMC/Architect. Contractor shall arrange to carry out the test to check the properties of EPDM rubber pad on the random sample selected by Employer/PMC/Architect (Min. 3 Nos of each type to a required length) at India and the contractor shall make sure that the properties are meeting the codes and standards and copy of such codes shall be produced by the Contractor for verification of Employer / PMC / Architect. e. Sealing between Facade Glass Panels: Design bite and thickness of structural sealant to withstand 3 times of the stress caused by the design wind pressure specified above and to ensure the same, the design calculation of sealant manufacturer shall be submitted along with shop drawing. Necessary materials as proposed in the shop drawing such as member, glass and any other material required by the Sealant manufacturer shall be supplied to them to carryout the test as per relevant codes & standards in order to validate the bite and thickness designed by them. Contractor shall obtain the test certificate from Sealant manufacturer and submit the same along with shop drawing and supported by the copy of relevant codes and standards. Contractor shall ensure that the bite and thickness of sealant as designed & determined by calculation, verified and tested by Manufacture's is followed in the shop drawing and the same shall be adopted for the glazing at factory after the approval of shop drawing. Acetoxy sealant shall not be used for Structural Glazing application. In general, providing and fixing the Structural and non Structural (weather) sealant shall be as follows: i) Structural sealant shall be DC 995 (one part) or DC 983 (Two part) of Dow corning make or SSG 4000 (one part) or SSG 4400 (Two part) of GE Bayer Silicone make or approved equivalent.




S.No

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Description

ii) Non-Structural (weather) sealant shall be DC 991 HP of Dow corning make or approved equivalent. f. System Supports : Providing and fixing the supporting system with Brackets / Clamps including fastening straps, nuts, bolts, rivets, washers etc. as per design requirement and as per approved shop drawing. Brackets in to the structures shall be of hot dip galvanized steel and Fastening materials shall be Non - magnetic Stainless steel 300 series - 316 grade of Hilti make or approved equivalent. Galvanizing thickness shall be in accordance with IS 2629 and 4759. Providing and fixing Serrated plates or Serrated washer wherever required as per the system requirement and as shown in the approved shop drawing. g. Smoke seal (If necessitated as per drawing): Providing and fixing Smoke seal / Fire stop using SS cap at sill level between sill finish material and Glass as well as at soffit level and in general it shall be supported with the help of chromotised finish aluminium bracket as designed and this bracket to be fixed on the wall / RCC surface with necessary SS anchor bolt and fastener of Hilti make or approved equivalent. All the Joints between the capped channel and any other finish material at both sill and soffit level shall be sealed with Intumeasant sealant of 3M / Hilti make or approved equivalent. Also, close the gap on the vertical surface between the face of column / wall / partition and structural glazed frame / glass by using extruded aluminium channel with cap with chromotised finish aluminium bracket supported on the column / wall / partition and in general the thickness of channel and cap shall be as per the design criteria. h. Field Test: Conduct Field test at site on the installed glazing system as per the criteria set out in the specification of the external facade system and as per the Methodology described in ASTM 501-2. Test shall be carried out in the presence of Employer/PMC/Architect. Methodology for carrying out the test shall be submitted to Architect for approval prior to testing. The results shall be recorded and the reports shall be submitted to the Employer/PMC/Architect for approval. If Field test fails, contractor shall submit the rectification methodology to correct the defects as per the performance data set out in the Specification of external facade system and as per the methodology described in the relevant code for the approval of Employer/PMC/Architect. Defects, if any noticed shall be rectified to the satisfaction of Employer/PMC/Architect. i. Provision: System design in total, shall have the provision to fix the Sliding / Openable door (Patch fitting Door) integrating with frameless glazing system with necessary structural supports cladded with specified materials and necessary hardwares etc complete and fixing the doors shall be form part of the over all system. 1. Sliding Door: Providing and fixing the sliding door operator as per specified type and make given in BOQ With specified size and model as per drawing, with the required structural support of load bearing system - PPF GT fittings of Dorma / Gaze make or approved equivalent make. The sliding door operator shall be fixed with required number of sensors to ensure that the maximum sensing range in the entrance portion is covered. The operator shall be fixed with satin finish SS plate of 6 mm thick to a required depth on the glazed partition itself in such a way the operator is housed neatly or house the sliding operator on the Facade




S.No

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Description

glass panel. All structural supports shall be housed neatly with ACP enclosure and with vent for Maintenance of the operator. Method of fixing is subject to the approval of Employer/PMC/Architect. Rate shall include providing SS strip on the edges to protect the laminated exposed face, fixing of laminated Glass as per the specification given in Schedule of quantities. Quote rate shall include supplying and fixing of glass. Mode of measurement shall be considered the Length and breadth of the door including fixed panel viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. Note: the following requirements shall be considering for Automatic Sliding door:

a. Weight of each sliding panel is in the range of 110 to 130kg. b. Maximum width of opening is 3000mm. c. Maximum height of opening is 3000mm. d. Thickness of glass in the range of 12 to 15mm.

2. Swing / Open able door: Aluminium framed Door as per BOQ specification. j. General Guideline: System design in total, including framing system, type & thickness of Glass pane, sleeves at connections, inserts, EPDM Gaskets, Adhesive tapes, Sealant, Supporting system / bracket including fastening and anchoring system & Materials specified in the schedule and the system details as shown in the tender drawing are only tentative and is meant to set out a general outline of the Proprietary system and minimum requirements / properties of the system and component parts. The method of fixing is subject to the approval of Employer / PMC / Architect. The general guidelines governing the system design and performance parameters as set out in the Specification relating to external Façade System and the contents therein. Since the external Façade system in terms of Design, materials, all fixing details, methodology of execution are proprietary in nature, the onus of the design and Performance requirements, shop drawing, execution etc satisfying the design intent and specification of external facade system including conducting the site survey prior to and after preparation of shop drawing and accommodating the site conditions in the system at appropriate levels etc lies solely with the Contractor. k. Mode of Measurement: Length and breadth (Sqm Items) of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. Glass area including groove (i.e centre to centre of groove line both horizontal and vertical) on the external surface only will be measured under respective item and paid for. Quoted rate shall be deemed to have considered the above stipulation. l. Rate. Quoted rate shall include the cost of all materials and labour involved in all the operations as specified above, specified in the external facade system, to execute the work as per approved drawings / shop drawings including, scaffolding, infrastructure facility, tools and plants etc.




S.No

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Description

necessary for execution of the respective item for all height and for all floor levels. Item measurable in Sqm. Rate shall include cost of supplying and fixing of glass, glass fin and field test etc. Rate shall exclude supply Doors (Sliding / Swing) shall be measured separately and paid under respective items.

22.03 2.00 Supply of Glass for glazing.

(IGU/DGU/ Monolithic)

Glass for Structural Glazing system: a. General: Supply of glass either Insulated glass, Double or Monolithic glass as per the options given in Schedule of quantities to the respective place to fix the glass on the system. Fixing the glass shall form part of the system cost quoted under respective items. Refer Annexure - I for the glass performance, processing, thickness and coating of glass and other parameters. Spacer for Insulated glazing unit shall be aluminium extruded profile and finished with AC 25 grade electrolytic colour anodic coating of black colour conforming to IS 1868 and filled with dry desiccant. Primary sealant shall be Poly-isobutylene (PIB) and Secondary seal shall be structural silicon sealant of DC 995 (one part) or DC 983 (two parts) of Dow corning or approved equivalent. Make and thickness of Inner pane glass shall be the same make as outer pane glass of IGU/DGU. Refer the separate item in Schedule of Quantities for the supply of Insulated / Monolithic glass. However all the glass panes are shall be heat strengthened and the protection of glass as specified shall be responsible of the Bidder/Processor. b. Processing of Glass: Details of the processor and their facilities should be submitted to the Employer/PMC/Architect for approval. Insulated glazing unit shall be processed only by the approved Processor. All glass panes used in the glazing shall be heat strengthened conforming to ASTM C 1048. No tong marks shall be allowed in the processed glass. Necessary test certificate shall be produced by the processor to confirm the adherence of the parameters set out in the codes and standards. New substrate glass shall only be used for coating and to ensure the same, a certificate shall be produced by the contractor. Making necessary arrangement to inspect the Glass processor by the representative of Employer, PMC and Architect (one representative from each as minimum) during the progress of glass processing. Glass Manufacturer shall ensure that only new substrate glass is used for coating and necessary inspection procedure shall be adopted to eliminate the incidence of Nickel sulphate (NIS) inclusion on the float glass used for coating and to ensure the same, a certificate from glass Manufacturer shall be obtained by the contractor and submit the same to Engineer-in-charge. Contractor shall arrange for obtaining necessary clearance from the processor for the inspections of the glass processing plant during the progress of glass processing and to carry out the random test (Minimum 3 nos) at the glass processor lab by Engineer-in-Charge. It shall be the responsibility of the contractor to make sure that the glass shall be processed as per specification and it shall be conforming to the criteria of the respective codes and standards. The contractor shall have to submit certificate from the glass processor that the glass processing has been done as per specification and codal provisions has been observed and such copy of codes shall be made available for verification of Employer / PMC / Architect. Processor shall provide removable Safety clips on each corner of glass and provide self adhesive plastic sheet to the required thickness on the external surface of the glass as a safety measure prior to packing to avoid




S.No

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Description

breakage of glass in the corners during transit, free from scratches and this safety clip shall be retained till the glass is taken for Glazing in to the frame at factory and plastic sheet shall be retained till handing over the project. Glazed panel with broken or Chipped off glass at the edges and with any scratch on the surface of the glass shall not be allowed to use in the Facade and found any such damages in the glazed panel even after glazing / erected in place shall be rejected and shall be replaced with new one after the approval of installation methodology by Employer / PMC / Architect c. Mode of Measurement: Length and breadth of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. d. Attic stock Glass: Actual size of the glass shall be measured correct to a centimeter. Areas shall be calculated in a square meter correct to two places of decimal.

22.04 3.00 to 5.00

Supply of Glass for

glazing etc. (Laminated /Monolithic)

a. General: Supply of glass laminated glass as given in Schedule of quantities to the respective place to fix the glass on the system. Fixing the glass shall form part of the system cost quoted under respective items. Refer Technical specification for the glass performance, processing, thickness and coating of glass and other parameters. However all the panes of laminated glass proposed for Facade glass shall be 100% heat soak tested and provide a 100% heat soak program for fully toughened glass for the specified thickness that is consistent with the EN 14179-1standard (550°F +/- 18°F for a dwell time of two hours). Necessary certificate shall be produced for all the glasses to ensure that all the glasses are tested. Methodology for submitting the test report shall be desired at the appropriate time by the Engineering Consultant. Make of Inner pane glass shall be the same make of outer pane glass of Laminated Glazing unit. However all the glass panes are shall be toughened and heat soak tested and the protection of glass as specified shall be responsible of the Bidder/Processor. b. Processing of Glass: Details of the processor and their facilities should be submitted to the Employer/PMC/Architect for approval. Insulated glazing unit shall be processed only by the approved Processor. All glass panes used in the glazing shall be heat strengthened conforming to ASTM C 1048. No tong marks shall be allowed in the processed glass. Necessary test certificate shall be produced by the processor to confirm the adherence of the parameters set out in the codes and standards. New substrate glass shall only be used for coating and to ensure the same, a certificate shall be produced by the contractor. Making necessary arrangement to inspect the Glass processor by the representative of Employer, PMC and Architect (one representative from each as minimum) during the progress of glass processing. Glass Manufacturer shall ensure that only new substrate glass is used for coating and necessary inspection procedure shall be adopted to eliminate the incidence of Nickel sulphate (NIS) inclusion on the float glass used for coating and to ensure the same, a certificate from glass Manufacturer shall be obtained by the contractor and submit the same to Engineer-in-charge. Contractor shall arrange for obtaining necessary clearance from the processor for the inspections of the glass processing plant during the progress of glass processing and to carry out the random test (Minimum 3




S.No

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Description

nos) at the glass processor lab by Engineer-in-Charge. It shall be the responsibility of the contractor to make sure that the glass shall be processed as per specification and it shall be conforming to the criteria of the respective codes and standards. The contractor shall have to submit certificate from the glass processor that the glass processing has been done as per specification and codal provisions has been observed and such copy of codes shall be made available for verification of Employer / PMC / Architect. Processor shall provide removable Safety clips on each corner of glass and provide self adhesive plastic sheet to the required thickness on the external surface of the glass as a safety measure prior to packing to avoid breakage of glass in the corners during transit, free from scratches and this safety clip shall be retained till the glass is taken for Glazing in to the frame at factory and plastic sheet shall be retained till handing over the project. Glazed panel with broken or Chipped off glass at the edges and with any scratch on the surface of the glass shall not be allowed to use in the Facade and found any such damages in the glazed panel even after glazing / erected in place shall be rejected and shall be replaced with new one after the approval of installation methodology by Employer / PMC / Architect. c. Mode of Measurement: Length and breadth of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal.

22.05 10.00 ACP

Cladding Laminated sandwiched composite panel cladding system and Associated works

Scope: Designing the cladding system with Laminated sandwiched composite panel (Aluminium composite panel) as per design intent, preparation of shop drawings for approval, supply, fabricate, erect as per approved shop drawings at all floor levels and at all floor heights and the cladding shall be provided matching the plane of glazing system as shown in the approved drawings, wherever required. Design the framing system with the gap as per drawing between wall/column/steel structures/any supporting system & cladding. Frame to support Laminated sandwiched composite panel and Decorative capping to any shape & profile and shall be supported between the aluminium angle brackets anodized finish. Brackets shall be fixed on to the Masonry wall with Solid block (Compressive strength not less than 5.5 N/mm2) / RCC / steel structures/any other supporting structures like brackets, Angles and the brackets shall be fixed with Polyamide expansion SS anchors of suitable dia and length with the strength as per design criteria. In order to decide the actual strength of expansion bolts to be achieved as per design, a pull out test on bolts shall be conduct at site on the block wall/RCC member at minimum 3 locations on each. Pull out test results will decide the type of anchors (PMC/Architect. All fasteners and expansion bolts shall be Hilti make or approved equivalent. Groove width in the system both in horizontal and vertical shall not be more than 18 mm and the groove width shall be maintained uniform for both structural glazing and cladding system. Groove shall be sealed with non structural and non-staining sealant. A.DESIGN




S.No

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Description

Design : Design the cladding system with Laminated sandwiched composite panel for the external surface like column, wall, jambs, sills, projected area, ceiling, decorative cladding on any surface to any profile and shape at horizontally / vertically / sloped / curved / circular etc with approved make of Laminated sandwiched composite panel (ACP) - 4 mm thick (0.5 mm thick aluminium sheet on top & bottom sandwiched with 3 mm thick core material confirming to BS 1467 in combination with approved Solid and Metallic colour panels Laminated sandwiched composite panel. The complete system to be designed to satisfy the structural design criteria specified in the technical specification. Necessary pull out test of anchor fastener shall be carried out on the masonry wall /RCC structure to check the load carrying capacity of the bolt designed under suction pressure for designing the supporting and anchoring system. Movement: System shall be designed to accommodate movement due to any force including the movement resulting from the exterior skin temperature ranging from 15 to 85 deg.celsius and also to accommodate the horizontal building movement of 10 mm per panel & vertical movement of 20 mm between floors on the aluminium framing system with support brackets, glass, gaskets and fastening devices. System shall be designed to accommodate the size and shape of the Laminated sandwiched composite panel as per the approved drawings including approved modifications as may be required during execution as well as all other incidental forces and stresses likely to be experienced under service conditions, i.e. Lateral force, Dead weight and Thermal expansion due to building movement both vertical and horizontal etc. Grooves shall be designed in such a way to accommodate weather sealant - Non staining sealant of approved make. B.MATERIALS a. Frames: Providing and fixing Aluminium anodized extruded members (50 x 50 x 2.0 mm thick Box Tube subject to satisfying the structural design criteria) designed to with stand design wind pressure and movement as specified as continuous member for cladding the aluminium Composite panel. Aluminium member shall be fixed into masonry wall / RCC member /steel structures with Brackets / Clamps. All fastening straps, nuts & bolts, rivets, washers/other fastening materials shall be of non magnetic Stainless steel and aluminium brackets shall be considered for ACP cladding with standard dimension and after the site survey if any undulation is observed in tern that doesn't allow to fix the aluminium bracket only in these areas the additional support with locally fabricated Hot dip galvanized bracket can be considered. The bidder shall include the provision for these brackets also with in the quoted rate for ACP cladding works. Aluminium shim shall be used for level adjustment of bracket but more than 20 mm is not acceptable. If more than 20 mm bracket shall be designed according to site condition. Aluminium brackets / clamps shall be fixed with chemical injection technique threaded anchor rods of Hilti make or approved equivalent to the base structure in the case of masonry wall / RCC members and SS anchor bolts in the case of steel structure. Extruded member shall be designed to accommodate Laminated sandwiched composite panel as per the approved shop drawings and extruded aluminium member shall be 6063 T6 or 63400 (H9) grade conforming to BS 1467 or IS 8147, finished with transparent electrolytic colour anodic coating AC15 grade




S.No

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Description

conforming to IS 1868. b. Composite Panel: Laminated sandwiched composite panel of approved make as specified in BOQ in combination with solid and Metallic colors and it shall consist of 3 mm thermoplastic 100% virgin Mineral core sandwiched between 2 skins of 0.5mm thick Aluminium sheet (alloy designation 5000 series – H22 to H24 conforming to BS 1475) making a consolidated panel thickness of 4 mm ranging 7.30 to 7.60 kg/sqm and to be fixed on the framing system described above. Laminated sandwiched composite panel finished with PVDF (Polyvinylidenfluorid) coating containing minimum 70% kynar 500 and 30% resin or Lumiflon based coating on the topside / top surface and the dry film thickness shall not be less than 23 microns for solid colour and 33 microns for Metallic colour with natural pearl pigment. The reverse side coated with polyester based wash coat and top surface shall be protected with a self-adhesive peel-off foil. Lamination process of Aluminium panel shall only be Glue Technology and the source of complete composite panel shall only be accepted. Providing and fixing Laminated sandwiched composite panel suitably stiffened internally on the back side for preventing deformation due to design wind pressure beyond permissible limits by using aluminium flat 25 mm wide – 4 mm thick gluved with 3 M make Double adhesive tape in order to maintain panel flatness and to avoid permanent deformation over a period. Stiffener shall be provided at 600 mm c/c behind ACP panel irrespective of structural check of the panel against stability and deflection. Aluminium flat of size 25 mm wide and 3 mm thick shall be provided to a length 100 mm bent to shape, wherever the Inner skin is cut to bend the ACP at the corners and as per approved shop drawing. Methodology of fixing the stiffener/Flat in the corner panel shall be established in the drawing or to be glued to ACP on the backside of the panel in such a way the fixing mechanism of stiffener / Flat shall not be visible on the elevation of the panel / outside. d. Sealing: Providing and applying the sealant for Jointing / Sealing and it shall be done with Non structural (weather) sealant / Non staining sealant of DC 991 HP of Dow corning make or approved equivalent with Polyurethane baker rods of Supreme make or approved equivalent. Acetoxy sealant shall not be used for Structural Glazing application. Sealing shall be carried out with Non structural (weather) sealant / Non staining sealant with Polyurethane baker rods, wherever the system is interfacing with glazing, cladding groove and any other groove. In addition to the sealant provided in the Cladding joints, all horizontal Cladding joints shall be covered with 3M (Code No: 4412N Translucent white) Tape of approved type and pattern with minimum 50 mm wide in addition to the Sealant. 3M Tape and Sealant shall be provided as per manufacturer requirement and methodology. e. Flashing: providing and fixing flashing at terrace level as part of the system made to profile as shown in the approved shop drawings and the profile shall be made out of hot dip galvanized sheet 1.2 mm thick and galvanizing coating thickness shall be in accordance with IS 2629 & 4759. In general, the flashing shall be provided to the entire length of cladding horizontally at terrace level with necessary anchoring system with SS fastening devices of Hilti make or approved equivalent. Also, the flashing shall be provided at parapet top below the coping to drain the water during any seepage through the sealant joints with overlap of 100 to 125 mm in plan with sealant at joints to make sure that no water leakage




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through coping / flashing joints. f. Field Test: Conduct Field test at site on the installed system as per the criteria set out in the particular specification in the presence of Engineer in charge. Methodology for carrying out the test shall be submitted to Employer/PMC/Architect for approval prior to testing. Record the results and submit the report to the Employer/ PMC/ Architect for approval. If Field test fails, correct the defects revealed to the satisfaction of the performance data as setout in the Technical Specification with the prior approval of Employer/PMC/Architect on defects rectification Methodology. g. General Guideline: System design in total, including Aluminium extruded member, type & thickness of Aluminium composite panel, Aluminium sleeves at connections, inserts, Sealant, Supporting system/bracket including fastening and anchoring system & Materials specified in the schedule and the system details as shown in the tender drawing are only tentative and is meant to set out a general outline of the Proprietary system. Since the cladding system in terms of Design, materials, all fixing details, methodology of execution are proprietary in nature, the onus of the design and Performance requirements, shop drawing, execution etc satisfying the design intent, particular specification and site conditions lies solely with the Contractor. h. Mode of Measurement: Length and width of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. i. Rate. Quoted rate shall include the cost of all materials and labour involved in the item for all operation described above and any other stipulations in the particular specification and agreement. Also, include the cost of scaffolding, infrastructure facility and all other consumables to execute the work as specified above. Rate shall exclude the cost of 3M tape 4412N Translucent white, which will measured separately under respective item in the Schedule of quantities.

22.06 11.00 Honeycomb

Cladding Honeycomb panel cladding

Scope: Designing the cladding system with Honeycomb panel cladding as per design intent, preparation of shop drawings for approval, supply, fabricate, erect as per approved shop drawings at all floor levels and at all floor heights and the cladding shall be provided matching the plane of glazing system as shown in the approved drawings, wherever required. Design the framing system with the gap as per drawing between wall/column/steel structures/any supporting system & cladding. Frame to support Honeycomb panel cladding to any shape & profile and shall be supported between the aluminium angle brackets anodized finish. Brackets shall be fixed on to the Masonry wall with Solid block (Compressive strength not less than 5.5 N/mm2) / RCC / steel structures/any other supporting structures like brackets, Angles and the brackets shall be fixed with Polyamide expansion SS anchors of suitable dia and length with the strength as per design criteria. In order to decide the actual strength of expansion bolts to be achieved as per design, a pull out test on bolts shall be conduct at site on the block wall/RCC member at minimum 3 locations on each. Pull out test results will decide the type of anchors (PMC/Architect. All fasteners and expansion bolts shall be Hilti




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make or approved equivalent. Groove width in the system both in horizontal and vertical shall not be more than 15 mm and the groove width shall be maintained uniform for both structural glazing and cladding system. Groove shall be sealed with non structural and non-staining sealant. A.DESIGN Design: Design the cladding system with Honeycomb panel for the external surface like column, wall, jambs, sills, projected area, ceiling, decorative cladding on any surface to any profile and shape at horizontally / vertically / sloped / curved / circular etc with approved make of Honeycomb panel. The complete system to be designed to satisfy the structural design criteria specified in the technical specification. Necessary pull out test of anchor fastener shall be carried out on the masonry wall /RCC structure to check the load carrying capacity of the bolt designed under suction pressure for designing the supporting and anchoring system. Movement: System shall be designed to accommodate movement due to any force including the movement resulting from the exterior skin temperature ranging from 15 to 85 deg.celsius and also to accommodate the horizontal building movement of 10 mm per panel & vertical movement of 20 mm between floors on the aluminium framing system with support brackets, glass, gaskets and fastening devices. System shall be designed to accommodate the size and shape of the Honeycomb panel as per the approved drawings including approved modifications as may be required during execution as well as all other incidental forces and stresses likely to be experienced under service conditions, i.e. Lateral force, Dead weight and Thermal expansion due to building movement both vertical and horizontal etc. Grooves shall be designed in such a way to accommodate weather sealant - Non staining sealant of approved make. B.MATERIALS a. Frames: Providing and fixing Aluminium extruded members (50 x 50 x 2.0 mm thick Box Tube subject to satisfying the structural design criteria) designed to with stand design wind pressure and movement as specified as continuous member for cladding the Honeycomb panel. Aluminium member shall be fixed into masonry wall / RCC member /steel structures with Brackets. All fastening straps, nuts & bolts, rivets, washers/other fastening materials shall be of non magnetic Stainless steel and aluminium brackets shall be considered with standard dimension and after the site survey if any undulation is observed in tern that doesn't allow to fix the aluminium bracket, the additional support with locally fabricated Hot dip galvanized bracket can be considered. The bidder shall include the provision for these brackets also within the quoted rate for Honeycomb panel cladding works. Aluminium shim shall be used for level adjustment of bracket but more than 20 mm is not acceptable. If more than 20 mm bracket shall be designed according to site condition. Aluminium brackets / clamps shall be fixed with chemical injection technique threaded anchor rods of Hilti make or approved equivalent to the base structure in the case of masonry wall / RCC members and SS anchor bolts in the case of steel structure. Extruded member shall be designed to accommodate Honeycomb panel as per the approved shop drawings and extruded aluminium member shall be 6063 T6 or 63400




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(H9) grade conforming to BS 1467 or IS 8147, finished with transparent electrolytic colour anodic coating AC15 grade conforming to IS 1868. b. Honeycomb Panel: Aluminium honeycomb panel - 25 mm thick of Hunter Douglas / Alucore of 3A Composite make to cladd the wall and Canopy. Honeycomb panel shall consist of two skins of flat smooth Aluminium alloy AA3005, with outer skin shall be of 0.7 mm thick and inner skin shall be of 0.5 mm thick sandwiched with pre-treated corrosion resistant honeycomb core Aluminium having diameter of 19 mm foil to a thickness of 0.076 mm. Honeycomb panels shall be fixed to a width of 15 mm on both horizontal and vertical joints by using extruded aluminium continuous clamps / clips with suitable size and pop up rivet & SS screws to a maximum spacing of 350mm in order to satisfy the structural design criteria specified in the technical specification and the joints shall be covered with a 10 mm metal cover extrusion, supported by a spring clip as per manufacturer specification. d. Sealing: Providing and applying the sealant for Jointing / Sealing in the sides of metal cover as per honeycomb panel manufacturer and it shall be done with Non structural (weather) sealant / Non staining sealant of DC 991 HP of Dow corning make or approved equivalent with Polyurethane baker rods of Supreme make or approved equivalent. Acetoxy sealant shall not be used for Structural Glazing application. Sealing shall be carried out with Non structural (weather) sealant / Non staining sealant with Polyurethane baker rods, wherever the system is interfacing with glazing, cladding groove and any other groove. In addition to the sealant provided in the Cladding joints, all horizontal Cladding joints shall be covered with 3M (Code No: 4412N Translucent white) Tape of approved type and pattern with minimum 50 mm wide in addition to the Sealant. 3M Tape and Sealant shall be provided as per manufacturer requirement and methodology. e. Flashing: providing and fixing flashing at terrace level as part of the system made to profile as shown in the approved shop drawings and the profile shall be made out of hot dip galvanized sheet 1.2 mm thick and galvanizing coating thickness shall be in accordance with IS 2629 & 4759. In general, the flashing shall be provided to the entire length of cladding horizontally at terrace level with necessary anchoring system with SS fastening devices of Hilti make or approved equivalent. Also, the flashing shall be provided at parapet top below the coping to drain the water during any seepage through the sealant joints with overlap of 100 to 125 mm in plan with sealant at joints to make sure that no water leakage through coping / flashing joints. f. Field Test: Conduct Field test at site on the installed system as per the criteria set out in the particular specification in the presence of Engineer in charge. Methodology for carrying out the test shall be submitted to Employer/PMC/Architect for approval prior to testing. Record the results and submit the report to the Employer/ PMC/ Architect for approval. If Field test fails, correct the defects revealed to the satisfaction of the performance data as set out in the Technical Specification with the prior approval of Employer/PMC/Architect on defects rectification Methodology. g. General Guideline: System design in total, including Aluminium extruded member, type & thickness of Honeycomb panel, Aluminium sleeves at connections, inserts, Sealant, Supporting system/bracket




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including fastening and anchoring system & Materials specified in the schedule and the system details as shown in the tender drawing are only tentative and is meant to set out a general outline of the Proprietary system. Since the cladding system in terms of Design, materials, all fixing details, methodology of execution are proprietary in nature, the onus of the design and Performance requirements, shop drawing, execution etc satisfying the design intent, particular specification and site conditions lies solely with the Contractor. h. Mode of Measurement: Length and width of the superficial area of the finished work shall be measured centre to centre of the grooves on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal. i. Rate. Quoted rate shall include the cost of all materials and labour involved in the item for all operation described above and any other stipulations in the particular specification and agreement. Also, include the cost of scaffolding, infrastructure facility and all other consumables to execute the work as specified above. Rate shall exclude the cost of 3M tape 4412N Translucent white, which will measured separately under respective item in the Schedule of quantities.

22.07 15.00 Bituminous coating

Providing and applying Cold Bituminous coating on the External wall behind Composite panel cladding area by using two coats of Multi-purpose anti-corrosive black cold bituminous of `Tankmastic' of STP Ltd or Lloyds - L4 of Lloyds Insulation make at the rate of application as specified by the manufacturers. Rate shall include cost for one coat of primer - Shalitex and all Materials, Labour and consumables such as brush, gloves, labour charges for handling, surface preparation, scaffolding etc, to execute the work described above all complete as directed by Employer/PMC/Architect.

22.08 16.00 Structural steel

Providing and fixing in position Hot rolled structural steel Members / Sections at all levels and to any shape & profile, if specifically ordered as & when required by the Employer/PMC/Architect and to be executed on prior approval (In general the structural Supports called for as part of the Schedule of quantities item elsewhere in the Schedule of quantities will not be considered in this item) and the structural support may be called for in a special case for cladding on the ceiling / soffit etc. In general, Structural steel consists of MS joists, channels, angles, purlins, runners, pipes (hollow / solid – square / rectangular / circular) insert plates, flats and sag rods with necessary sleeves, bolts and nuts, gratings including cutting, straightening, welding as per standards for connections including consumables, anchoring the structural members in to the RCC/Masonry wall with suitable anchor fastener of Hilti or approved equivalent make etc complete. Rate shall include preparation of surface, applying Zinc Phosphate primer before and after erection with minimum 75 microns (DFT) with top coat with Low VOC Epoxy or Polyurethane paint with minimum 225 microns (DFT) of Akzo Noble make of approved colour for all structural steel members with in the quoted rate. Note: In general the structural steel members called for as part of the Schedule of quantities item elsewhere in the Schedule of quantities will not be considered in this item.




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22.09 6.00 Aluminium extruded

Sub frame

Providing and fixing Colour anodized aluminium extruded Sub frame of the section size of 14 mm x 62 mm having a weight not less than 0.855 Kg/m of Section No 1698 of Bhoruka Aluminium Ltd make or approved equivalent. Extruded aluminium sections shall be 63400 (H9) grade conforming to IS 8147, finished with AC25 grade Architectural quality electrolytic colour anodic coating conforming to IS 1868 of approved colour. Rate shall include for fixing the sub frame with necessary anchor fastener of Hilti make or approved equivalent on to Masonry wall / Rc surface etc. Rate shall include necessary chasing in walls, if required to fix the sub frame, all the Materials and labour involved to execute the work specified.

22.10 7.00 Aluminium fixed cum

sliding windows / ventilator

Providing and fixing aluminium fixed cum sliding windows fabricated as per drawing and fixed at all levels, elevations and heights having a main frame work of vertical and horizontals, out of specially designed approved extruded sections shall be satisfied the structural design criteria specified in the technical specification. All aluminium sections shall be 63400 (H9) grade conforming to IS 8147, finished with AC25 grade Architectural quality electrolytic colour anodic coating conforming to IS 1868 of approved colour. Rate shall include fixing the main frames into masonry wall / RC concrete surface with necessary clamps, fastening straps, nuts, bolts, rivets, washers and other fastening materials shall be in stainless steel or aluminium. The section unit weight per running meter is subjected to tolerance on the wall thickness as per IS 6977/ Equivalent BS. The sizes and dimensions are subject to slight variations and for which no extra payment will be paid. Window shutter shall be provided with Glass as specified in the BOQ and as per design for all panels and with snap fit aluminium colour anodized beading with special water proof cascades, Neoprene etc. complete, as directed. Necessary weather silicon sealant of Dowcorning or approved equivalent make shall be provided at the junctions between wall and main frames. Rate shall include stainless steel safety clips to be provided on each corner of glass as an additional safety to avoid breakage of corner of the glass and also to be provided with EPDM / Neoprene triple barrier, extruded Reddiprone weather strip to ensure water and air tightness and shall include providing necessary hardwares, concealed locks and Handle etc. complete all as directed.

22.11 8.00 Extruded louver

Providing and fixing aluminium extruded louver "Z" type / Aerofoil 100 as described below and to be designed to satisfy the structural design criteria specified in the technical specification. and the louvered system shall be made out of heavy duty aluminium anodized storm Louver / Aerofoil 100 Profile extruded as Bhoruka Extrusions or approved equivalent and anodized extruded louver blades having 2 mm thick and to profile and shape as per drawing. The blades shall be fixed at 45 deg angle with a pitch as specified in Schedule of quantities and the louver blades to be set in aluminium box frame plate of size 95.6 x 10.97 x 2.20 mm - section no. 3849 - weight not less than 0.726 Kg/Rmt, Louver - 103.2 x 50.80 x 2.10 mm thick section no 2270 - weight not less than 0.726 Kg/Rmt / Louver - 75 x 28 x 1.5 mm thick section no 2089 - weight not less than 0.464 Kg/Rmt and the plate shall be fixed in to the outer box frame alround of size 100 x 45 mm - 2.20mm - section no. 0074 and weight not less than 1.365 Kg/m. The louver shall be fixed on to the aluminium box frame as per approved drawings including fixing the Box frame into wall/RC surface using colour anodized aluminium extruded Sub frame of the section size of 14 mm x 62 mm, SS anchor fasteners of Hilti make or approved equivalent.




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All aluminium sections shall be 63400 (H9) grade conforming to IS 8147, finished with AC25 grade Architectural quality electrolytic colour anodic coating conforming to IS 1868 of approved colour. The louver should be fitted into the aluminium box using SS screws including necessary accessories etc complete as per direction of the Engineer in charge. Rate shall include for providing and fixing Aluminium anodized angle of size 25 x 25 mm alround frame to protect the system from rain water entry through the sides, materials and labour involved to execute the work as described. If any sub structural support is necessitated to fix the louver system/assembly, the contractor shall provide on prior approval of the Employer/PMC/Architect and it shall be measured under respective item. Rate shall include for providing GI Flashing - 2mm thick bent to profile and to be provided around the openings and between the gap of frame and wall. Mode of Measurement: Length and breadth of the superficial area of the finished Louver area with in the Frames shall be measured on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal.

22.12 9.00 Aluminium Louver 300FV

Providing and fixing of 0.7 mm thick Aluminium Louvers 300FV of Fameline make or approved equivalent from Hunter douglas make finished with stove polyester enamel coated with not less than 30 microns on both sides and the louver panel shall be fixed by using 0.7mm thick Backed enamel coated G.I Coil Coated Carrier / stringer with spacing not more than 600mm carrier shall be fixed over the suitable size of M.S PU painted or aluminium anodized box framing system of suitable size by using SS 316 grade nuts & bolts / Screws and the complete system shall be satisfy the structural design criteria specified in the technical specification. Also, Perimeter Trims with aluminium L angle having size 25x40mm – 2mm thick (minimum) with hold down clip etc, All aluminium sections shall be 6063-T6 Conforming to BS 1474 / 63400 (H9) grade conforming to IS 8147. Rate shall include the supplying and fixing of aluminum main frame, louver panel, carrier, Carrier splice, Perimeter Trims HDG brackets / clamps with necessary SS 316 grade anchor fastener, screws nuts & bolts, washers, scaffolding and necessary accessories etc and all materials involved in the work. Mode of Measurement: Length and breadth of the superficial area of the finished Louver area shall be measured on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal.

22.13 12.00 Granite Cladding

Providing and fixing Granite slab - Dry type fixing using approved colour and pattern of granite with thickness not less than 25 mm and size as per drawing subject to the size of slab is not less than 600x600 mm to the maximum extent. Rate shall include providing smaller size of granite if necessitated to form a Patten or at corners and no extra cost is payable, if any additional cutting, polishing is involved. Each granite slab is to be individually supported using 4 Nos.of stainless steel brackets with suitable size as per drawing and BOQ specification with 6mm dia SS pin each at top and bottom with check nut both top and bottom of clamp / bracket with necessary SS bolts and anchors, all SS shall be 300 series - 316 Grade. SS clamps with the Pin of 25 mm height to ensure that the pin of




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minimum 22 to 25 mm inserted in to the granite at both top and bottom in the cut groove on the granite with slot is being 25mm long, 8mm dia for Pin lipping. Any corner or junction slab which may be of smaller size should also be supported similarly. Each slab will also have similar 2 clamps at the top, balance gaps in the grooves after placing the Clamps in the granite shall be filled with suitable adhesive of approved make to ensure that the clamps are fixed stable and not loosened. There will be 6mm groove shall be provided between the granite slabs in elevation as directed. All the edges of the Granite slab shall have "V" cut or Half / Full round chamfered finish both horizontal and vertical joints. It has to be ensured that the slabs are perfectly vertical and in plumb. Gaps between the granite slabs are to be filled with non staining clear silicone sealant of Dow corning make or approved make and all as per manufacturer specifications. Rate shall include providing the Granite slab matching the groove / elevation lines to close the gaps on the top and sides to prevent water or any insects coming through the gap between wall and Dry fixing Granite. Rate shall include for using the water cut Granite slab (Kerosine cut not permitted either at factory or at site), procuring the Granite from well recognized approved quarry / supplier‟s with control over quarry and mixing of quarry / supplier‟s for same shade shall not be permitted under no circumstances and also to be ensured that the shade of Granite procured from single source will be uniform and no colour or pattern variation and charges for groove cutting in granite to fix SS clamps, Chamfering, edge polishing, fabrication and fixing of SS clamps, anchor fasteners, double scaffolding to the required heights, wastages, work at all levels and heights, cleaning the surface, protection of the Granite slab from any damage till taken over by the Employer including designing the entire system shall be designed to with stand design wind pressure specified in the Technical Specification.

22.14 19.00 Aluminium Grille

Providing and fixing of Aluminium Grille shall be fixed on the system by using suitable aluminium box section with minimum 0.80mm thick as a main frame. Grille / Louver panel shall be fixed on the aluminium main framing system with suitable size and thick brackets shall be fixed on the RC / MS surface with vertically to the spacing not more than 1200mm and horizontally not more than 1500mm by using SS 316 grade anchors and bolts. In addition to the aluminium main frame, 25 x 25mm with 1.2mm thick (min) aluminium extruded profile as per the manufacturer shall be fixed at every vertical aluminium main frame to fix the aluminium Grille with specified product code in the bills of quantities with not less than 0.8mm thick shall be fixed as per drawing with pitch as specified in the BOQ / Schedule of quantities using SS 316 grade bolt and nut arrangement. The aluminium grille and all aluminium frames shall be finished with PVDF coating with approved colour. All aluminium sections shall be 6063-T6 Conforming to BS 1474 / 63400 (H9) grade conforming to IS 8147. Rate shall include the supplying and fixing of aluminum main frame, sub frames to receive the grille, aluminium brackets / clamps with necessary SS 316 grade anchor fastener, nuts, bolts, rivets and washers of approved make and all materials involved in the work. Mode of Measurement: Length and breadth of the superficial area of the




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finished Louver area shall be measured on the external surface viewed externally correct to a centimeter under the respective items. Areas shall be calculated in a square meter correct to two places of decimal.

SECTION – 3 - SPECIAL INSTRUCTIONS TO THE BIDDERS 23.0 SPECIAL INSTRUCTIONS TO THE BIDDERS TO BE GOVERENED WHILE QUOTING THE

RATE FOR THE TENDERED ITEMS UNDER BILLS OF QUANTITITIES: 23.01 General:

The particular specification and schedule of quantities must be read with the drawings, conditions of contract and the specifications and the bidder shall be deemed to have examined the drawings, specifications, conditions of contract and to have acquainted himself the works to be done in the way in which they are to be carried out. This Special instructions is shall form part of the contract.




In case of any inconsistency between the BOQ (Schedule of quantities, Particular Specification), Technical Specifications and Tender Drawings and incase of conflict amongst different sections/heads, precedence shall be given in the following order of descending priority

Schedule of quantities, Particular Specification.

Technical Specifications.

Tender Drawings.

23.02 Unless otherwise specified in BOQ (Schedule of Quantities, Particular Specification) and Tender

Drawings, rate quoted for External Facade and Associated works shall include the following:-

Cost of all materials, labour, equipment, tools & plants required, conveyance, infrastructure facilities, single / double - Scaffolding, staging, formwork, working platform, suspension platforms, davits, hoisting equipment, protective materials etc. as required at any stage of execution / maintenance.

Work at all levels, heights & elevation and location.

Items should strictly comply with the Technical specification, Particular specifications and Schedule of Quantities. Specifications and Drawings furnished herewith will only be the governing factor for the bidders to choose the system and Materials as per design Intent.

Structural Glazing system including type & thickness of Glass, extruded frames, sleeves, inserts, Gasket, adhesive tapes, Sealant, Supporting arrangements including fastening and anchoring system envisaged in the Particular specifications & Schedule of Quantities is only indicative and is meant to set out a general outline of the Proprietary system as commonly understood. Since the Structural Glazing system, both in terms of Design, materials, details, methodology of execution are proprietary in nature, the onus of the design, drawings, specifications and execution satisfying design intent, performance requirements and site conditions lies solely on the bidder.

Bidder shall be responsible to design the system as per the sizes and shapes of the glass panels shown in the drawings including any modifications as may be required during execution and the designed system should withstand the wind pressure specified in the Documents as well as all other incidental forces and stresses likely to be experienced under service conditions, i.e. Lateral force, Dead weight and Thermal expansion due to building movement both vertical and horizontal etc.

Bidder shall also be responsible to design the entire aluminium framing system, type & thickness of Glass considering the minimal spectral and physical parameters of the glass set out in the technical specifications and Schedule of quantities, sealant including Bite thickness, supporting arrangements including fastening device size & material, prepare and submit shop drawing in two stages namely project proposal stage and execution stage, obtain approval prior to execution, fabrication, supply, erection of the system and testing the system as envisaged in the Technical specification, Particular specifications and Schedule of quantities ie. for both Mock-up & Field test.

Bidder shall be responsible to design the framing system to support both Vision & Spandrel panel on a continuous framing system, irrespective of spandrel panel proposed with Glass or laminated sandwiched composite panel (Aluminium Composite Panel) or Granite or a combination thereof.

Bidders to note that the eventual requirement is performance oriented with in the profile, to achieve total Structural Glazing system (either Unitized or Semi-unitized system specified in the Schedule of quantities) expected from the design that is adopted. ie. Resistance to design wind pressure, Prevention of Air & water penetration, continuous Pressure Equalization system, built-in continuous internal drainage for condensation & penetration & built-in adjustability for thermal movement, thermal barrier, separator Gaskets for Bi-Metallic




Corrosion, smoke seals wherever essential etc.. Designing and providing the continuous internal drainage system in such a way that the system is built in over all system with the drain point at bottom most level and it shall be the responsibility of the bidder.

Bidder shall be responsible for incorporating the air pressure equalization principal with concealed continuous gutter at all levels and at all Floors for self drainage to achieve water tightness besides providing air & water barrier with Gaskets. Barrier should be provided at minimum three stages either unitized & or semi-unitized system. Entire system shall be designed to accommodate thermal movement of the aluminium components and glass resulting from the exterior skin temperature from 15 to 85 deg celsius & interior skin temperature from 15 to 30 deg celsius and to accommodate horizontal building movement of maximum 10mm per bay and vertical movement of maximum 20 mm between floors. Irrespective of system either Unitized or Semi-unitized system specified in the Schedule of quantities, Bidder shall be responsible for providing the Structural Glazing system conforming that no aluminum members and Sealant is visible or seen on the Exterior/Elevation.

Bidder shall be responsible to design the system as per the sizes and shapes of the laminated sandwiched composite panels (ACP) / Granite / Sand stone slab shown in the drawing and the designed system should withstand the wind pressure specified in the Documents. Bidder shall also be responsible to design the entire extruded aluminium framing system proposed to erect on the Main Structure, type & thickness of laminated sandwiched composite panels (ACP) or Granite slab / Sand stone considering the minimal technical criteria of the panel set out in the technical specifications, particular specifications and schedule of quantities. Gaskets, baker rod, sealant including Bite thickness, supporting arrangements including fastening device size & material, preparation of shop drawing, fabrication, supply, erection of the system and testing the system as envisaged in the Technical specification, Particular specifications and Schedule of Quantities ie. both Full scale off site proto type (if specifically called for in the Schedule of Quantities) & Field test (Methodology should be described for both hose & pressure box test along with submission, in line with Technical specification).

Bidder shall be responsible to design the system for Granite cladding covers supporting structure, Aluminium member, laminated sandwiched composite panels (ACP) and all type of Louvers, Glass details and size as per specification, Granite / Sand stone thickness and size, EPDM, Sleeve details in the system for expansion, drainage system, details of drain point, sealant, etc.

Irrespective of the system either Unitized or Semi-unitized system proposed by the bidder, the following factors shall be considered while quoting their rates and thereafter to be complied:

Structural framework to be pre-assembled self bearing modular elements of floor

to floor height i.e. split mullion grid unitized construction system with Sealant free surface Glazing panels to be fixed without the use of restraining screws.

No screws / rivets / fasteners are visible after complete system is installed. Open

groove constructions with out aluminium member and Sealant on the surface since aluminium member and Sealant on the surface are not permitted to use.

Bidder shall be responsible to provide a full scale off site proto type at site for at least 3 bay (Vision and Spandral panel) and for 2 storied prior to commencement of fabrication based on project proposal approval in such a way, the system provides aluminum member, glass, laminated sandwiched composite panels (ACP), EPDM, Sleeve details in the system for expansion, pressure equalization concept and in-built drainage system, details of drain point, sealant details, etc. Field test shall be conducted on the site mock up prior to commencement of full scale work. As a result of test, if any rectification is required shall be carried over by the cladding contractor at free of cost. Quoted rate under respective item of Schedule of quantities shall include for making necessary arrangements and facility to attend / witness the test by the representatives of the Employer, PMC and Architect (Minimum one from each firm).




Bidders to note that the quoted rate for the items covered under External Facade and Associated works shall be comprehensive and appropriate and shall include all the applicable items envisaged in the system, whether or not they have been specifically described in the documents / information supplied, including change in sizes & thicknesses of members as appropriate.

Bidders to note that the minimum spectral Values of Glass specified under various options, Technical characteristics of laminated sandwiched composite panels (ACP)l and Technical properties of the sealant as given over and above to Schedule of quantities, Particular specifications and technical specifications shall be strictly complied with. Fabricator shall design the system suitable for installing the glass from the exterior surface after handing over and during maintenance by the Employer. However, the vertical in situ glazing in the system shall not be allowed during construction / Erection stage under any circumstances.

Bidder shall produce design parameters for the following items including the various components involved in the system in 2 stages namely, project proposal stage along with bid submission and Prepare shop drawing based on the approved system by the successful bidder, but will not necessarily limited to,.

Aluminium Extrusions for all kinds of framing and structural support for all types of

the system.

Glass for various applications.

Laminated sandwiched composite panels (ACP) including all types of Aluminium Extruded Louvers / Projection Louvers with special profile.

Structural system and ACP wrapping Details for Canopies / Parasol with

Supporting Details.

Structural system and Glass fixing Details for Glass Canopies with Supporting Details.

Point fixed Glazing using Spiders or Articulated bolts with supporting member.

System with supporting Details for Aluminium Doors with Patch Fittings, Windows,

Ventilators, etc.

Gaskets and Baker rod.

Sealant - both structural and weather sealant.

Details of Anchoring and Fastening Devices, brackets, cleats, separators, interlocking sleeves.

Bidder shall be responsible to design the system in such a way that the sealants shall withstand movement‟s upto 50% or to the limitation of manufacturer's specification. Exposed sealant surface shall not crack or bubble. No acetoxy sealant shall be used. Elastomeric sealant shall not be allowed to use, unless otherwise the manufacture render the service on product back-up and guarantee. Intumescent Sealant shall be used between fire stops/Flashing and structural aluminium members.

Aluminium extrusions shall be of aluminium alloy 6063 - T6 conforming to BS 1474 or 63900 HP confirming to IS 8147.Any marks, lines, roller marks on the extruded sections prior or after anodizing is not acceptable.

Aluminium extrusions shall be anodized to an approved colour and shall confirm architectural Class I colour anodic coating or AC 25 conforming to IS. Field cutting of anodized components shall not be permitted.




In general, the proposed glass shall be of approved make and as specified in the document. Inner pane of the glass proposed to use in Insulated Glazing unit shall be the same make of outer pane glass. The Insulated glazing unit shall be supplied by the same manufacturer, or pre-approved processor on prior approval. If the Insulated glazing unit processed and supplied by the manufacturer or specialized processor a single point guarantee for Insulated glazing unit shall be provided by the fabricator and sole responsibility lies on the fabricator.

New substrate glass shall only be used for coating and to ensure the same, the manufacturer shall produce the certificate. There should be no tong marks in the glass. The glasses with broken/chipped off at the edges shall not be allowed to use in the system under any circumstances and if any such glass is noticed with any kind of damage, the glass in the panel shall be replaced with new one before erection.

Float glass shall conform to ASTM C 1036.

Heat strengthened and tempered glass shall conform to ASTM C 1048.

Tempered glass shall conform to ANSI Z 97.

Glass shall be designed to satisfy the requirement of AS 1288 & 1300.

All safety glass shall conform to the requirements of AS2208 or CPSE 16 & CFR 1201.

The glass for Spider/Point fixing/Frameless/patch fittings system shall be Heat soak tested confirming to the relevant AS or ISTM Standards.

In general, the glass products shall conform the following International standards :

BS 952 - Part I ASTM C 1036 – 91 EN 572 - 1 & EN 572 – 2 NBN S 23 – 002 NF P 78 – 302 DIN 1249 TEIL 3 NEN 3264

Top Hung openable windows shall be provided with Multi point locking with Handle with key / cremones of Alualpha or pre approved equivalent make with self balancing stainless steel friction hinges with thermoplastic asymmetric end cap to ensure weather tight sealing including all connected hardwares. Multi point locking handle shall be manufactured from die cast material and to be powder coated of approved colour and shade and all other accessories / components shall be manufactured from stainless steel - 316 grade. Hinges and Detachable handle to conform 500 hr neutral salt spray test - BS 7479:

Laminated sandwiched composite panels (ACP) shall be of aluminium alloy 5000 - H 22 / H24 conforming to BS 1475 and the thickness of panel shall be 4mm., (skin aluminium on both sides should not be less than 0.5mm) suitably stiffened internally on the back side (Methodology of fixing the stiffener to be described by the Bidder for approval) for preventing deformation due to design wind pressure beyond permissible limits. Skin aluminium supplied by Aluminium coil manufacturer shall be manufactured on Direct casting line to the International standards to ensure that the skin aluminium shall withstand the specified compressive strength.

Aluminum composite panels shall be factory fabricated and assembled in compliance with the manufacturer‟s Data sheets. All panels shall be cut and routed using equipment and tools recommended and approved by the panel manufacturer. After folding into cassettes, an extruded aluminium profile shall be fixed to the minimum 25 mm deep return bend using 5 mm blind rivets. The aluminium flat of size 25 x 2mm shall be provided as a stiffener to




ACP in the corner bends to the total height of the panel either to be gloved or with 3 M sticker.

Provide factory fabricated Composite aluminum panels for Canopies including all the Structural steel support and any additional steel support required to extend the canopy etc complete. All structural members shall be Hot dip Galvanized to the specified coating thickness and to be painted with two coats of Zinc chromate/Phosphate primer before and after erection with minimum 75 microns (DFT) with top coat with Low VOC Epoxy or Polyurethene paint with minimum 150 to 175 microns (DFT) of approved make.

Provide the Joints with clear non staining silicon sealant or approved colour and approved make and all as per Manufacturer's Specification, if called for in the Particular specifications and Schedule of quantities.

Weather stripping / Gaskets shall be Elastomer - EPDM of approved make with shore 61 & 71 EP / TN.

Baker rods shall be polyurethene foam of "supreme or approved equivalent make". Spacer tape (Adhesive tape) shall be of open cell foam of `Nortan' make.

Secondary sealant, primary sealant, spacer, PVC non-adhesive tape, setting blocks made out of solid extruded silicon rubber with a hardness of 85 Durometer - Shore A shall be provided.

Under any circumstances, sealants within 30 days of expiry date marked / labeled on the container / cartridges shall not be allowed to use in the work.

All support brackets for aluminium members in the structural glazing shall be 6061- T6 - Structural grade and the brackets to have serrations.

All supporting system, such as brackets and similar attachments used for fixing & erection of the aluminium members, laminated sandwiched composite panels (ACP), aluminium extruded louvers, ACP cladded canopies shall be of hot dip galvanized steel to the coating thickness as per IS 2629 & IS 4759. Anchors, fasteners with nuts & washers and all other fastening materials shall be non-magnetic stainless steel of 300 series -316 grade steel.

All Flashings / smoke seals / fire stops shall be provided with extruded colour anodized aluminium profiles at all floor levels, sills, periphery of glazing and window, top of parapet at terrace and sides of vertical surfaces where necessary.

All bolted connections shall include lock washers, lock nuts or other locking device and conceal the fasteners where visible in the finished work. Fasteners in non-wetting locations shall be cadmium plated, if directed.

All steel plates and shapes shall be primer painted in conformation with Fed. Specification TT-P-6445.

All hot dip galvanized steel shall conform ASTM A 123 and coating shall conform IS 2629 and IS 4759.

All electro galvanized steel shall conform ASTM A 164 or FS-Q-Z-325b (2).

All stainless steel shall be 316 grade, brush finish and 300 series non-magnetic steel.

Wherever finishes are not specified, all such metals shall be finished in a manner consistent with similar work and necessary to confirm with the design intent. Such items shall be identified by the successful bidder well in advance to the Employer/PMC/Architect and the work shall be executed on prior approval from Employer/PMC/Architect.




Shop drawing for full scale Mock-up as well as for entire external cladding system based on approved Design Parameters shall be provided for approval at appropriate stages.

Structural test shall confirm to ASTM E 330.

Making provision for inspection of glass at manufacturing / Processor place including their facility by the representatives of Employer, PMC and Architect.(one representative from each firm as minimum shall be considered).

Conducting periodical test for sealant in place for adhesion and extent of fill, using the recommended practice of the manufacturer. Replace any sealant that does not adhere or fails to cure. Trial deglazing shall be done both during factory processing stage and at site, if so directed by the Employer/PMC/Architects.

Off site proto test - full scale (if specifically called for in the Schedule of Quantities) and Field test - Hose test shall be carried out in accordance with Technical specification including all materials required for Off site proto type test and Field test. This shall include submission of shop drawings of test unit, test bed, test chamber, preparing and supplying the materials for specimen etc.

Conducting Off site proto type test including necessary arrangements at an approved laboratory with the specified design wind pressure and Lateral force including making necessary arrangements and facility to attend / witness the test by the representatives of one from Employer, one from PMC and one from Architect. If off site proto type test fails, correct the defects revealed till the satisfaction of the performance data as setout in the Technical Specification.

Air infiltration test / Air permeability, Static water infiltration test, dynamic water infiltration test and wind pressure tightness shall be pretested in internationally recognized laboratory and confirm to ASTM E 283 / AAMA 501.1 / ASTM E 330 respectively or its equivalent British standards or its equivalent UNI standards.

Aluminium Extrusions, Glass, laminated sandwiched composite panels (ACP), Aluminium extruded Louvers (Storm proof type and specialized profile and shape), Gasket, sealant, supporting system including fastening Devices provided at site of work shall be as approved in the off site proto type test and shall be identical.

Conducting Field test - Hose test including necessary arrangements, scaffolding, hose, water & manpower with in the quoted rate. If field test fails, correct the defects revealed till the satisfaction of the performance data.

Provide accurate benchmarks for use in wall erection at all floors and if there are any errors or inconsistencies rectify at no extra cost.

Tolerances for building frame and other works shall be strictly adhered to.

Provide non-flammable eel-slip, nylatron, high impact polystyrene or approved equivalent slip-pads between moving parts at all expansion connections.

Seal the joints within the wall and between adjacent constructions using the approved Intumescent sealant.

Remove and replace all damaged or disfigured components to the satisfaction of the Employer at no extra cost.

Provide a separator at contact surface of dissimilar material wherever there is a possibility of corrosive or electrolytic action.




Maintain housekeeping during the tenure of the field work by way of cleaning and removing the unwanted materials, broken glass, ACP wastage, packing Materials, debris regularly and on a periodical basis and keep the work place and premises neat and clean. Protect all components and materials from damage or disfiguration of any kind of at all stages of work until handing over.

Clean glazing pocket before setting the glass.

Clean entire structural glazing, laminated sandwiched composite panels (ACP) & other components prior to handing over.

Cleaning agents which are compatible with aluminium, glass, glazing materials & sealants shall only be used and the same shall get it approved before use on work.

Necessary provision shall be considered on the Structural glazing system to facilitate Façade Cleaning agency to clean the entire facade system including Canopy areas. An additional identified built in support shall be provided on ACP cladding on the top of canopy camouflaging with cladding in such a way the facade cleaning agency to walk over the support and clean the top surface of the Cladding with out damaging the cladding. Details and methodology shall submit for Employer/PMC/Architect's approval. Also, include necessary provision to facilitate Facade cleaning agent to clean the structural glazing and associated works by providing their own system and equipment.

Quantities furnished in the Schedule of Quantities are indicative / tentative and are subject to reconciliation on award of work between successful bidder and Employer/PMC/Architect, if there is any discrepancy at the shop drawing stage.

Supply an adequate number of glass panels as spares so as to replace broken glass panels in the event of accidental breakage in the future for maintenance, which will be paid separately under respective item. Number of spares required shall be decided by the Employer, based on the successful bidder proposal on the sizes and numbers, tentatively attic stock will be 2% (Two percent) of total glass area covering all the different type and sizes of panel used in the project at the agreed Quoted rate.

Submittals should be provided as mentioned in the Technical specification for approval. Tenderer submissions should include a statement showing the conformity for each component with technical specification or otherwise tenderer should specify/highlight the Material or component proposed, which does not comply with Technical specification.

All the drawings and samples submitted along with tender document shall form part of the contract. Bidders are requested to submit the tender drawings and the samples of materials required along with tender submission duly signed & stamped, failing which the tender is liable for rejection. Samples of all components such as Aluminium Extrusions (Main member, supporting member, sleeve member etc.), Glass, Gaskets, Sealants, laminated sandwiched composite panels (ACP), aluminium extruded Louvers and granite / sand stone etc. shall be submitted along with tender for approval. Atleast 300mm square size samples labeled for Glass, ACP and Gaskets shall be produced by the bidder along with tender for scrutiny. Based on approval, all the samples required shall be reproduced by the successful bidder for final approval of the Employer / PMC / Architect and all the approved samples of Materials shall be stored by the successful bidder at site and to be produced as and when required for verification.

Entire facade and associated works including all the components involved in these items shall be guaranteed by the external cladding agency as General and system Guarantee for a period of 10 (Ten) years including special guaranty for glass, reflective coating of the Glass, laminated sandwiched composite panels (ACP) including coating and Sealant by the Manufacturer / Supplier for the period specified in the Technical Specification in an approved Performa acceptable to the Employer on a stamp paper. The Guarantees from Specialist




applicators such as for sealants, Double Glazed unit fabrication/Processor, Glass processing & Coating, DG unit manufacturer / processor, laminated sandwiched composite panels (ACP) including Skin Material from the Coil Manufacturer and processor etc, shall also be submitted from the respective Manufacturer / sub - vendor, counter signed by the Specialist Structural Glazing and External cladding agency.

Specialist Structural Glazing and External Facade agency shall also provide a certificate for compliance of the conditions provided by the sealant manufacturer in their Warranty in the form of Affidavit, which shall also form part of system guarantee.

SECTION – 4 - LIST OF APPROVED MAKES:

The make of materials specified below shall be followed by the successful bidders strictly. If the successful bidder wishes to propose the alternate make and the same shall be got it approved by the Employer/PMC/Architect. Decision on approval alternate make shall be the discretion of the Employer/PMC/Architect.

S.No Description Vendor Name

1 Aluminium Extrusions Bhoruka Aluminium Ltd.

Century Extrusions.

Sapa Aluminium

Global Aluminium.

2 Aluminium Anodizing Bhoruka Aluminium Ltd.

Global Aluminium / Ajit Metal

3 Glass – Hi performance soft coat glass PPG

Emirates

Asahi

Saint Gbain




S.No Description Vendor Name

5 Glass processor – Insulated, laminated and Monolithic Glass with Reflective coated Glass

Fuso, Mumbai. Glass Tech, Mumbai. AIS, Mumbai GSC.Glass Mumbai.

6 Aluminium Composite Panel (Laminated sandwiched Composite Panel) Note: Composite panel (As a complete panel) to be sourced only from one approved supplier / source.

Alucobond

Alpolic

Knauf Fameline

7 Honeycomb panel Hunter Douglas / Alucore – 3A Composite

8 EPDM / Silicon Gasket Sai Rubber Industries

Anand Reddiflex

Osaka Rubber

9 Silicone Sealant Dow Corning, Sika, Momentive

10 Double Adhesive Tape Saint Gobain – Nortan

11 Friction Hinges & Restrictor Assembly Securistyle / Cotswold/Geze

Cremany / Handle with Key Alualpha / Geze

12 Anchor fasteners – 316 Grade. Hilti

Apolo

Mungo

13 SS Nut Bolt / screws – 316 Grade. Nut Bolt Centre

Kunthan

14 Shim/Backup rod Supreme Enterprises

15 Masking tape Royal Traders

16 Rock wool Rockwool India/Rockloyd

17 Spiders & Articulated Bolts Patch Fittings and Hardwares

Dorma / Geze / Kinlong

18 Special profiled Aluminum Louver / Grill / Perforated sheet.

Fameline / Hunter Douglas /Colt

19 Cement board Everest

20 Bitumen STP ltd

21 Structural Steel TATA / SAIL

SECTION – 5 - TECHNICAL INFORMATION TO BE FILLED BY THE BIDDER:

1. Typical Detailed calculation and drawings shall be submitted for approval along with the data sheet as part of tender submission for evaluation.

2. Method statement for technical proposal shall be included wherever required while filling the

following statement. 3. Minimum standards for the below technical data sheet should be as per details and

specifications, conditions as given in the Tender shall be followed. No deviations for the same will be permitted.

4. Deviations to establish special features of the Bidder's system if any to be highlighted

separately for evaluation.

5. The information‟s from the Bidders as called for is required to evaluate their offer and hence filling the below table is compulsory.




TECHNICAL DETAILS TO BE FILLED BY THE BIDDER

S.No Description Inputs from Bidder

A Details of System

1 Name of Manufacturer.

2 Product code of System.

3 Size of Mullion proposed in the Glazing system.

4 Size of Transom proposed in the Glazing system.

5 Details of Hardwares for openable shutters.

6 Grade of Alloy for Aluminium including make, Grade & Temper.

7 Aluminium section Extruder detail

8 Type of Finish and its coating thickness

9 Type of bracket proposed and method of installation at site.

10 Number of Barrier considered

11 Details of material proposed as Barrier

12 Details of insulation material for Spandrel panel and its fixing method.

13 Method of Glazing at factory and Erection / Installation of Glazing at site. (Is it manual or Mechanized)

B Details of Glass, Processing& Glazing:

1 Type of Glass considered in the Bid.

2 Type of Coating and other Details

3 Substrate glass colour

4 Manufacture / Make / Origin Details

5 Sourcing of Insulated glazing (Specify warranty levels and name of Processor)

6 Location of Processing Plant and Details.

7 Spacer Details of insulated glazing unit including make of infill material.





8 Type and make of Adhesive tape used for glazing and others.

9 Structural bonding of glass and type of sealant (2 part or 1 part)

10 Quality control measures

11 Specify the Hardwares considered in the bid including Locking system for open able panels other than glazing windows.

C Details of Aluminium Extrusions other than Glazing part:

1 Specify Extruder details

2 Description of Alloy ie. Make, Grade & Temper.

3 Source of Aluminium substrate and the Standards followed by Extruder

4 Specify Coating details and description of coating, Standards followed by coater.

5 Type of testing to ensure the thickness of coating and details of other tests required as per standards.

6 Type of Protective coating to Aluminium extrusions.

D Details of laminated sandwiched Composite Panel (ACP):

1 Type and make laminated sandwiched Composite Panel.

2 Make, Thickness, Weight and Grade of core used in ACP.

3 Typical fixing details and specification of Fixing Material.

F Details of Frameless Glazing:

1 Type and make of Frameless Glazing - Spider / Articulated bolts.

2 Type and Make of Patch fittings

3 Manufacturer Details

4 Country of Origin

G Details of Fixing and Fabrication other than glazing





1 Type of Bracket including Material and coating Description including Nut and bolts.

2 Type of Material proposed as Separators and details.

3 General Type and Make of Anchors and fasteners / Specify if they are chemical anchors or if any.

H Details of Sealing :

1 Type and make of Gasket proposed (EPDM or Neoprene)

2 Make and Grade, Components for both Structural and Weather sealant.

3 Fire stop and Smoke Seal Details with Material and rating. Please provide the typical drawing and details.

4 Flashing Details with Material and rating. Please provide the typical drawing and details.

I Details of Miscellaneous Items :

1 Type and make of Hardwares and accessories for doors, windows such as lock, floor spring and door closer etc

2 Preventive Maintenance offered - spare

J Details of Louver system :

1 Make of louver

2 Grade of Aluminium

3 Details of Finishes & thickness of finishes.

4 Type of Bracket and method of installation at site.

K Details of Performance Test:

1 Details and location of off site proto type Test laboratory

2 Methodology of Test and Credentials of the Laboratory.

3 Details of Field test viz. Type, Equipments used, methodology etc.




ANNEXURE - A FORMAT OF PERFORMANCE GUARANTEE OF GLAZING SYSTEM

Submit Performance Guarantee for the period of 10 years after the completion of Defects liability period as per the respective clause of the Special Instructions to the bidder under Technical Specification agreeing to repair or replace the defective materials and workmanship and as per the details given below and enumerated as (a) to (n) under clause 2 of the agreement. Note: DRAFT FORM OF WARRANTY IN THE FORM OF PERFORMANCE GUARNTEE TO BE ISSUED BY THE SUCCESSFUL BIDDER TO THE EMPLOYER IN CONSIDERATION OF AWARD OF CONTRACT IS GIVEN BELOW: To Client / Employer Name: ……………………. (Hereinafter referred to as the Owner)




Whereas ………………………………. having its registered office at ……………………………………. (Hereinafter called “The Contractor”) has undertaken, in pursuance of Contract No. …………………………….. Dated …………………. for the work of ………………………………………………………at ………………………. (hereinafter called “The contract”). AND WHEREAS it has been stipulated by you in the said Contract that the Contractor shall furnish you a Performance Guarantee for the External Façade Glazing and Associated works undertaken by them, agreeing to: 1. Nothing in our agreement with the Employer shall operate to exclude or limit our liability for

breach of the warranties set out herein. 2. In addition to the defects liability period during Guarantee Period (Beyond Defects Liability

Period (DLP)), we agree to repair or replace defective materials and workmanship, which include the following but not limited to:

a. Abnormal deterioration, b. Aging or weathering of the work, c. Water leakage, d. Air exceeding specified limits, e. Structural failure of components resulting from exposure to pressures and forces up to

specified limits, f. Failure of operating parts to function normally, g. Deterioration or discoloration of any finishes in excess of normal weathering and aging, h. Glass breakage, secondary glass damage or breakage due to deterioration of coating on the

glass, i. Cracking, staining, chipping and discoloration of granite, j. Scratching, denting other type of surface damage to the composite aluminum panels, k. Adhesive or cohesive failure of silicone sealant and failure of the work to fulfill other

specified performance requirements. l. Anodized finish on aluminum works and Galvanized finish for brackets m. Materials and fastening devices used in the system. n. Corrosion in any of the brackets made out of stainless steel.

3. The Performance Guarantee shall include failure of the work due to non compliance of the

tender specified performance requirements and if found any deficiency or failure due to use of defective materials and its workmanship during the guarantee period. (Note: Period shall be as specified in the Special Instructions to the bidder under Technical Specification. The contractor has to undertake responsibility for safety with respect to set out of glass with or without member with which it is held in position during the Guarantee period.

4. The Performance Guarantee does not include damage caused by vandalism, any accidental

breakage or natural condition exceeding the performance requirements. 5. This Performance Guarantee offers free replacement and rectification free of cost if the defects

are attributable to faulty manufacture of panels and all extruded members / fixtures used in the system, substandard finish and defective workmanship if noticed.

6. This Performance Guarantee and its enforcement shall not deprive the Employer of other action,

right or remedy available to him. 7. Performance Guarantee for the systems and for the performance of the materials used in the

system shall be include the following special guarantee also :

The unconditional Guarantee for peeling or deterioration of glass reflective / reflective Low E coating & any other modified coating by the Glass Manufacturer and for material obstruction of Facade vision glass as a result of dust or film formation on the internal glass surfaces.




The unconditional guarantee period of Aluminum extrusion, Aluminum Composite panel, Gaskets and Sealant.

This Performance guarantee is valid until ……………………….. SIGNED & SEALED by the External Facade Contractor Date: Place:

ANNEXURE - B

FORMAT OF BACK TO BACK GUARANTEE OF MATERIALS

DRAFT FORMAT BACK TO BACK TO BACK WARRENTY FROM THE GLASS MANUFACTURER FOR INSULATED / MONOLITHIC / LAMINATED GLAZED UNIT BY USING THE REFLECTIVE

COATED HI PERFORMANCE GLASS AS OUTER PANE & CLEAR GLASS AS INNER PANE HEAT TREATED / HEAT SOAK TESTED.

The ………………………..(Herein after called the Glass Manufacturer and the Processor) warrants its Insulated / Monolithic / Laminated glass for a period of ten (10) years from date of manufacture as per the respective clause of the Special Instructions to the bidder under Technical Specification against defective materials or workmanship which result in material obstruction of vision caused by dust collection or film formation on internal glass surfaces due to failure of the Insulated / Laminated glass seal.

1. In the event that due to non compliance a Insulated / Monolithic / Laminated glass unit is found

and verified by the Glass Manufacture to be defective, the Glass Manufacturer will provide replacement unit at no extra charge including transport to the place of installation) refund the purchase price of the glass. If the Glass Manufacturer elects to replace the defective glass, the Glass Manufacturer will not be liable for any other expenses including removal of the defective




unit, installation of replacement units, any labor, materials, and /or any other damages including incidental, indirect, special, or consequential damages.

2. The Glass Manufacturer expressly assumes for and this warranty does not include the following:

Glass breakage, product failure due to improper usage;

Product failure due to improper handling, loading, unloading or storage.

Incompatibility whether glazing or installation materials, including, coatings, sealants, gaskets, setting blocks, lubricants, insulation or any other materials;

Fault in glazing, building construction;

Damage caused by water and use in sloped glazing installations;

Failure to adhere the Glass Manufacturer‟s instructions regarding installation and / or Maintenance of the unit, including written proof of routine maintenance.

Scratches or abrasions to the product;

Abnormal weather conditions; or damage caused / solvents, alkalis or any other chemicals used on or around the products.

3. Subject to the provisions of this warranty, …………….………………(Herein after called the

Glass Manufacturer and the Processor) warrants that the Product will be for a period of 10 (Ten) years from the date of supply, free of :

Edge separation or de-lamination other than that which occurs within 6mm of the original glass edges, if the reflective Low E coated is specified.

Visible or visual defects, inclusions or faults that can be seen from a distance of at least 3 meters from the outside surface and 1 m from the inside surface and which are not within the acceptable limits set out in the performance specifications of the tender issued and in accordance with the technical specifications..

All architectural Insulated Glass conforms to the applicable Australian Standards AS2208 and AS2080.

This Warranty specifically includes any consequence of glass breakage due to lesser thickness of glass panes than required as per Design Criteria.

4. Warranty Coverage: In the event of any breach of this warranty (Herein after called the Glass Manufacturer and the Processor) shall replace the Product inclusive of all costs of transportation and installation.

5. To the greatest extent permitted by law …………….………… (Herein after called the Glass Manufacturer and the Processor) will not be liable for any personal injury, loss, claim, property damage or labour, material or other costs (whether special or consequential or otherwise) suffered by or arising as a result of any breach of this Warranty regardless of how such loss or damage is caused and whether such loss or damage is direct or indirect.

6. The Warranty is further subject to the following conditions:

The Warranty applies only to Product in the size, shape and form supplied by ………………………………….………… (Hereinafter called the Glass Manufacturer and the Processor). Any further cutting, edge-working or processing of the Product as supplied shall render the Warranty void:

using the Product in such a manner that it comes into contact with wet cement, hard foreign objects, metals and material will likely give rise to abrasive damage, and will render the Warranty void; The use, installation and maintenance of the Product should be entirely in accordance with Manufacturer recommendations as published in the Manufacturer literature and any specific




correspondence pertaining to this installation. Failure to comply with these procedures will render the Warranty void;

The Product shall be installed in a manner that prevents prolonged contact with moisture at the glass edge, or risk voiding the Warranty;

The Product should not be exposed to chemical fumes or gases other than those present in normal clear atmospheric air nor subjected to prolonged exposure to water or moisture which may cause rainbow type staining, nor exposed to radiation of any type other than normal sunlight, to prevent voiding of the Warranty;

The Product should not be subject to, or likely to be subjected to stresses from any cause in excess of the stresses advised as acceptable in design standards, to prevent voiding of the Warranty;

7. Warranty of Replacement Product: Any replacement Product supplied pursuant to this

Warranty will be warranted, according to the terms herein, only until the expiration of the Warranty period as from the original supply of Product.

SIGNED, SEALED AND DELIVERED by the Glass Manufacturer and Processor in the presence of Façade Glazing Contractor and:- (Note 1 :………………………………..witness)

OR THE COMMON SEAL of the Glass Manufacturer and Processor was hereunto affixed in the presence of Façade Glazing Contractor and of:- (Note 2 …………………………….. Witness)

OR

SIGNED, SEALED AND DELIVERED for and on behalf of and as lawful attorney of the Glass Manufacturer and Processor and under Power of Attorney dated ……………………by ……………in the presence of Façade Glazing Contractor and of:- (Note 1)………………………………witness)

OR

THE COMMON SEAL of the Glass Manufacturer and Processor was hereunto affixed in the presence of External Façade Contractor and of:- (Note 2 : ……………….. ……………… witness) Name of witness in Block letters: ------------------------------------------------- Address: ……………………………………………………………

Note: The External façade contractor shall undertake the responsibility for safety with respect to set out of glass with or without member with which it is held in position during the guarantee period.